Articles

What Mix is Best for Potted Lavender and Rosemary?

Potted lavender needs soil with good drainage.

“What is the best soil mixture for potted rosemary and lavender?” Wakenda of Portland, Oregon.

Answer: Both lavender (Lavandula spp.) and rosemary (Rosmarinus officinalis) are Mediterranean herbs requiring very well-drained soil, especially in the winter. They will not tolerate cold, wet feet.

 

For potted specimens, we recommend Black Gold® Natural & Organic Potting Mix with added pumice and perlite to increase drainage. Add three parts potting mix to one part perlite and/or pumice. Incorporate the ingredients fully before adding them to the container. Make sure your container is spacious and has drainage holes at the base.

 

I recommend choosing compact lavender and rosemary varieties for containers. Lavender ‘Vera‘ (Lavandula officinalis ‘Vera’) is a fine compact specimen, and rosemary ‘Irene‘ (Rosmarinus officinalis ‘Irene’) is a beautiful cascading form with good looks and flavor.

 

For more detailed information, we recommend you read the following article about the soil needs of lavender: Why Soil Matters to Lavender. The soil needs of lavender also apply to rosemary plants.

 

Happy gardening!

 

Jessie Keith
Black Gold Horticulturist

What is the Best Soil for Herbs in a Raised Bed?

“What soil is best to use for my herbs in a raised bed? I have lemon balm, mint, basil, and thyme.” Stacey of Brooklyn Park, Minnesota

Answer: Our Black Gold Natural and Organic Raised Bed Potting Mix is specially formulated for raised beds and has all of the characteristics needed for growing herbs, including good drainage, ample organic matter, and a neutral pH. Additionally, I always recommend that gardeners mix a little natural topsoil into their raised beds at a ratio of one part topsoil to two parts bagged mix. The addition of natural mineral soil will increase the longevity of the mix and provide natural microbes and minerals.

The lemon balm and basil will grow beautifully in the organic-rich mix. In the areas where you plant thyme (or lavender and sage, for future reference), I recommend the addition of a fast-draining mineral amendment, such as sand or gran-i-grit. A small bag will help. Mint is a very aggressive herb that will completely take over a raised bed, so I suggest growing it alone in a large pot.

After your herbs have initially been planted, water them every other day to help them become established. After a couple of weeks, you will only need to water if the soil becomes dry in the absence of rain. Add a slow-release fertilizer for vegetables and herbs at the beginning of the season to ensure that they grow their best. (Click here for more information about growing essential culinary herbs.)

When determining how the amount of mix to add to your beds, use this formula:

How to find soil volume for square or rectangular raised beds:

To find the amount of soil you will need, determine the volume of your square or rectangular bed by measuring its length, width, and height. Then use the following formula: V = L x W x H.

V = soil volume
L = bed length
W = bed width
H = bed height

So, if your bed happens to be 6 feet x 4 feet x 1.5 feet, multiply 6 x 4 x 1.5 = 36 cubic feet. Our raised bed soil is sold in 2.2 cf bales. To determine the amount of bagged soil you might need (36 cubic feet/2.2 cf bales= 16). If you plan to add topsoil at a 1:3 ratio, then you will need 2/3 mix (24 cubic feet (10.66 2.2 cubic foot bags of raised bed potting mix)) and 1/3 topsoil (12 cubic feet of topsoil). If you want to buy topsoil by the yard, then you must know yardage. Divide the answer in cubic feet by 27 to get the number of cubic yards you might need (36/27= 1.3 cubic yards).

Happy gardening,

Jessie Keith

Black Gold Horticulturist

 

Essential Culinary Herbs of the Seasons

Essential culinary herbs are best planted in spring.

Stylish and serviceable herb gardens are a delight through the growing season when they appeal to the eye and senses and provide fresh herbs. In winter, stores of dried and frozen herbs make cooking a pleasure. If you don’t already have a culinary herb garden, you are missing out. And, there’s no reason not to grow one. Essential culinary herbs are the easiest plants in a food gardener’s repertoire.

Every culture relies on essential herbs to flavor its foods. In past blogs, we have written about French herb gardens, Indian herb gardens, herbal tea gardens, herb containers, lemon-scented herbs, and apothecary gardens, but oddly enough, we have never written about growing herbs essential to Western cuisine. These are the common (and pricy) herbs that homeowners buy at the grocery store (even though they grow like weeds). Herbs are yawn and water garden plants unless you want to make a show and create a formal herbary or knot garden.

Essential Herbs of Spring

Chives are lightly oniony and very springy. (Image by Jessie Keith)

The first chives of spring are so bright and welcome when added to fresh vegetables and salads, as are the tender leaves of parsley when they begin to unfurl and are at their sweetest. Fine cilantro and dill–both cool-season annuals–are two other spring herbs no garden should be without. In late spring, count on chamomile to produce its sweet daisies that are harvested and dried to make delicious, soothing tea to enjoy year-round. These are the spring herb essentials.

Chamomile

Chives (Allium schoenoprasum, USDA Hardiness Zones 4-8): Chives put forth tidy clusters of oniony, grassy foliage in spring. Pompons of edible mauve flowers bloom in mid-spring, rising above the upright foliage. Harvest them fresh, when they are most flavorful. In summer, chives wane in the heat but will often perk back up in fall.

Chamomile (Matricaria retutica, Zones 2-8) is a winter annual or short-lived perennial to sow in fall. It will overwinter as a ferny green rosette and then bloom in full glory with a flurry of small white daisies in spring. Harvest the flowers for drying when they just begin to open. Allow some plants to set seed to encourage new fall seedlings.

Cilantro

Cilantro (Coriandrum sativum) is a leafy annual that likes it cool and starts producing stems of white flowers and seeds as the weather heats up. But, that’s a good thing because its seedheads, which dry by summer, are crushed to make the spice coriander. Harvest the leaves while you can for guacamole, salads, and salsas. Also, consider cilantro a fall herb to seed in no later than early September.

Dill (Anethum graveolens) is a true spring annual herb that you only need to plant once. Harvest the ferny green leaves to flavor salads, spreads, and pickles, and

Dill

let the yellow-green umbel flowerheads dry for flavorful dill seed. Let some seeds fall to the ground and sprout for a second dill harvest in the fall.

Parsley (Petroselinum crispum) comes in curly and flat-leaved forms and lends fresh flavor to sauces, salads, and meats. Lush clumps of parsley leaves flourish in the cool spring weather and give way to flowering in the heat of summer, after which the plants die. If you replant parsley in the fall, it will often survive through winter.

Essential Herbs of Summer

Oregano continues to stay green and flavorful until frost.

Sweet basil tastes like summer–whether used to flavor sauce, pesto or added to a citrusy summer drink. Mints of all kinds grow rampantly and need containment, but every gardener should have at least one pot of good mint. Thymes, especially lemon thyme, is a summer staple at my home that lends itself well to chicken, fish, salads, and vegetables. Oregano and piney rosemary are necessities for grilled meats and vegetables. These are the summer herb essentials.

Basil

Basil (Ocimum basilicum) is a warm-season herb that’s grown as an annual. The key to keeping it sweet and flavorful is to clip off the flower heads as they appear. Grow it in the garden or in containers. (See the video below to learn how to care for container-grown basil.), and clip the leaves all summer to keep plants tidy and flavorful. (Click here to learn how to grow basil indoors in winter.)

Mint (Mentha spp.) leaves flavor summer mojitos, tabouli, and fresh mint tea. The plant is so easy to grow you can plunk a stem in a glass of water, and it will root in a week. Its aggressive nature is a mint’s only downfall. One seemingly harmless plant can take over a garden in no time, so plant it in a big pot filled with Black Gold Natural & Organic Potting Soil to keep its roots from roaming. When it starts to

Mint

outgrow the pot, divide it, and give the spare to a friend (with fair warning).

Oregano (Origanum vulgare, Zones 4-10) has rooting stems that tend to spread, so be sure to give it space to grow. You can also contain oregano in a pot. Clusters of edible purple flowers bloom in midsummer, which attracts bees. Use the leaves to flavor meats, vegetables, and sauces in summer. In the fall, dry or freeze the leaves for winter cooking.

Thyme

Rosemary (Rosmarinus officinalis, Zones 8-10) is a drought-tolerant, shrubby, evergreen herb with resinous needle-like leaves that taste great on meats and in sauces. Bees are attracted to its violet-blue flowers that bloom in late spring. The cold-tolerant variety ‘Arp’ (Zones 6-10) is a hardier option for northern gardeners. Dry the leaves for winter use.

Thyme (Thymus spp., Zones 5-9) has small, aromatic leaves that are evergreen. In late spring, the low, spreading, shrubby herb bears small clusters of flowers for bees that may be pink, purplish, or white. Plant it along a patio edge where it can spill across the pavement or in a pot. Harvest the leafy stems any time of year to add to many dishes or dry the leaves for herbal mixes.

Essential Herbs of Fall and Winter

Bayleaf is a great indoor/outdoor potted herb.

Sage tastes of turkey stuffing and pairs well with pumpkin. And bean soups never taste quite as good without the complement of winter savory. A big pot of bay leaf should be a winter houseplant for every gardener who cooks. Just be sure to take the pot outdoors in summer to let the Mediterranean tree to enjoy the sunshine. Spicy ginger is another indoor/outdoor tropical herb that will grow well in a sunny window. These are the essential herbs of winter.

Sage in winter

Bayleaf (Laurus nobilis, Zones 8-10) will grow as a 20-30 foot evergreen tree where it is hardy, but if kept pruned in a pot, it will stay compact. Harvest the leaves for soups, sauces, and meats, but keep in mind that new leaves will not be produced until spring, so be sure not to strip the plant of all greenery and kill it. Pot-grown specimens thrive in OMRI Listed®Black Gold Natural & Organic Potting Mix. (Click here to learn more about growing bay leaf.) 

Ginger (Zingiber officinale) grows very well as a potted house plant in a brightly lit spot with good humidity. Its roots can be harvested as the plants grow and used to make sweet and savory dishes. As with bay leaf, bring your potted ginger outdoors in summer to allow it to grow to its fullest. (Click here to learn more about growing ginger.)

Winter savory in summer

Sage (Salvia officinalis, Zones 4-8) has felted, gray-green, evergreen leaves with a pungent flavor. The hardy shrubby perennial bears pretty lavender-blue flowers in summer, which are also edible and attract bees. It is best to harvest and dry leaves in the fall for winter cooking, but if you run out, you can always pick off a winter leaf or two without harming the plant.

Winter Savory (Satureja montana, Zones 6-8) The low, semi-evergreen winter savory looks attractive throughout much of the season. Its peppery leaves add flavor to green beans, soups, and stews. In summer, it has clusters of white or pinkish flowers that attract bees. Plant it along the edge of an herbal border.

Growing Herbs

Perennial herb borders are attractive and have permanence.

To make it easy, all of these essential culinary herbs grow best in full sun and fertile soil with good drainage. Most are not too demanding when it comes to fertilizer, but a little all-purpose plant food at the beginning of the season never hurts. Spring is the best time to plant them, aside from tender indoor/outdoor herbs. Before planting, amend your garden soil with good compost, such as OMRI Listed® Black Gold Garden Compost Blend, to encourage good rooting and drainage.

When planning an herb garden, it’s smart to keep your annual and perennial herbs apart. Perennial herb borders are attractive and have permanence. They look right at home in raised beds or even pretty herbal rockeries. Just remember to reserve mints for big patio pots. Annual herbs are nice to plant among complementary vegetables. Dill is right at home planted alongside cucumbers, and almost everybody plants their sweet basil around garden tomatoes. Chamomile looks pretty when planted in a row beside spring greens or cabbages. Then keep your herbs harvested and well-tended to make the most of them all year round. (Click here to learn how to harvest and store herbs.)

Best New Herbs and Vegetables for 2022

Each year, I look forward to writing this article because it’s fun to research and write. Vegetable gardening is popular, and with popularity comes variety and loads of new enticing introductions each year. 2022 is no exception. New prettier, tastier, more disease-resistant vegetable pickings are many, and with inflation on the rise, I hope more people will give home growing a try. Inexpensive fresh food is a huge draw! Successful home growers quickly learn the value of less costly, better-tasting food harvested from their own gardens.

New 2022 Vegetable Introductions

Lots of the plants on this list, I plan to grow myself. Each new introduction was chosen for its advertised flavor, vigor, production, and appeal. Disease resistance is another plus.

Beans and Peas

‘Sweet Gem’ is an exceptional new snap pea from High Mowing Organic Seeds. (Image thanks to High Mowing Organic Seeds)

Starting with cool-season crops, there are a couple of select peas to try. High Mowing Organic Seeds is offering the crisp, new snow pea ‘Blizzard‘ (58 days to harvest). It performed very well in their trials, bearing lots of slender, crisp, sweet snow peas on 30-36 inch vines. Snap peas are my favorite, so I will be trying another new pea they are offering, ‘Sweet Gem’ (63 days) snap pea. Its copious, juicy, crisp, sweet peas are produced on strong 45-52 inch vines, which are disease resistant.

Warm-season bush beans can be grown in 4-week intervals throughout the summer, and I like the space-saving plants. Slender, crisp filet beans are so delicious when freshly harvested, and bright yellow ‘Bamako‘ filet bean (54 days) from Johnny’s Select Seeds is stringless, crisp, and plants become loaded with golden beans in the summer months. The upright bush bean is also very disease-resistant. Green bean lovers should consider the new Red Tail snap bush bean, which bears straight, crisp, glossy, 5-6 inch green beans with excellent flavor.  Add it to your list.

Sweet Corn

The new ‘Wild Violet’ sweet corn looks more like an ornamental. Wow! (Image thanks to Burpee)

Two new corn varieties stood out to me on the page. The early corn ‘Solstice’ (68 days), offer by Johnnys, is a tasty bicolor with yellow and gold kernels that mature in just a little over two months after sprouting. Blight resistance and reliable productivity are two more reasons to grow it. The unusually beautiful ‘Wild Violet‘ sweet corn is a Burpee offering with blue-grey and white kernels that darken after cooking. Even though it looks like decorative corn, it is sweet, juicy, and flavorful–a must-grow variety for adventurous gardeners.

Greens, Cabbages, and Roots

‘Expect’ cabbage is dense and perfectly formed. (Image thanks to High Mowing Organic Seeds)
The large, sweet Chinese cabbage ‘Miss Hong‘ (55 days) from Johnny’s Select Seeds has dark-red, crinkled leaves that are noted for their crunchy, yet tender, texture. Those who love traditional cabbage should grow the perfectly round and dense ‘Expect‘ (100 days). It is disease-resistant, heat-tolerant, and flavorful. Another cool new brassica is ‘Rainbow Candy Crush‘ kale from Jung Seed Company. It looks like the prettiest frilliest purple-pink ornamental kale but it is wonderfully flavorful. Plant it in the fall, and harvest it after frost to boost its sweetness.
Salad lovers have many new greens to grow. Butter lettuce is a personal favorite, and the disease-resistant ‘Milagro’ butterhead lettuce produces large, beautiful heads in just 54 days. Plant this with the two reliable, curly, cut-and-come-again lettuces purple EZFLOR and green EZPARK, and you will have fresh salad all spring. The EZ lettuces are long-bearing, bolt-resistant, and disease-resistant.

Unique carrots are always fun to grow, and ‘Yellow Moon‘ is an all-season Nantes x Imperator type carrot that’s crisp, long, and pale yellow. I am sold.

Squash, Melons, and Cucumbers

 

The sweet, red, seedless watermelon ‘Century Star’ has speckled fruits and leaves. It’s a 2022 regional AAS Winner (Michigan). (Image thanks to AAS Winners)

Parks Seed is selling, Butterbaby butternut squash (100-105 days), which has 4-6 inch, sweet squashes that are as cute as pie. The short-vined plants allow home gardeners with less space to grow them. Those with more space need to try Burpee’s ‘Butterkin’ squash (105 days), which is a pumpkin and butternut squash hybrid with a pumpkin-like look and butternut skin. Its bright orange flesh is noted as being delectably sweet and smooth.

Cucumber and pickle picklers must try ‘Mini-Me’ (45 days), a seedless snack cucumber that’s prolific, just 2-3 inches, and very crisp and sweet. Grow these little Beit-alpha-type seedless cucumbers through summer. The larger beit-alpha cucumber, Merlin (50-55 days), from Burpee Seeds, is equally seedless, sweet, and bears well.

‘Hara Madhu’ is a super sweet melon for hot, dry areas. (Image thanks to Baker Creek Heirloom Seeds)

Century Star (80 days) seedless watermelon is a 2022 AAS Regional Winner for a reason. It yielded lots of sweet, seedless, 10 lb melons in Michigan where summers are cool. The fruits and leaves are beautifully dotted with yellow spots as well. Another unique melon I could not resist is the Indian ‘Hara Madhu’ (90 days), which is noted for its exceptional tolerance to hot, dry conditions as well as its honeyed taste. It’s a great choice for those living where summers are hot.

One productive new zucchini from Baker Creek Heirloom Seeds that stood out is ‘Long White of Palermo‘ (45-55 days). The heirloom Mediterranean variety bears buttery zucchinis with a pleasing nutty flavor on bushy plants just right for smaller gardens. The totally unique avocado squash ‘Zapallito Del Tronco‘ (50 days) from Baker Creek also piqued my interest. It is an Argentinian heirloom that looks like a winter squash but eats like summer squash and has buttery soft flesh.

Tomatoes and Peppers

For fantastic peppers try ‘Mocha Swirl’. (Image thanks to Burpee)

Burpee is selling the colorful ‘Mocha Swirl‘ (50-70 days) snacking pepper exclusively, and it is one of the prettiest peppers I’ve ever seen. Its tasty elongated fruits are swirled with shades of red, orange, purple, yellow, and green when mature. Plant it alongside the compact (18″) ‘Purple Beauty‘ bell pepper (75 days), from Baker Creek Heirloom Seed, which has sweet, thick-walled, blocky fruits that mature to almost black. Both will look beautiful on a crudité tray alongside Johnny’s reliable, bright orange ‘Flavorburst’ pepper (67-87 days), which is noted for its high sugar content.

The colorful slicing tomato ‘Alice’s Dream’ has tropical, sweet fruits. (Image thanks to Baker Creek Heirloom Seeds)

2022 has so many tomato introductions! My final picks were chosen for beauty, trial ratings, disease resistance, and taste (most of all). The bicolored green and red Captain Lucky (75 days, indeterminate) slicing tomato is a new one from Johnny’s with excellent flavor that challenges the best heirloom tomatoes. The yellow, green, pink, and red interior is described as psychedelic. Two more big on beauty and flavor from Baker Creek are ‘Alice’s Dream‘ (80 days, indeterminate) beefsteak and ‘Black Strawberry’ cherry tomato (60 days, indeterminate). ‘Alice’s Dream’ has an orange-yellow exterior striped with purple and a deep orange-yellow interior described as tasting sweet and tropical. The super sweet ‘Black Strawberry’ tomatoes are orange-red caste with a mottled overlay of purple-black and produced in easy-to-harvest trusses. Finally, Burpee’s Bodacious big slicing tomato (80-85 days, indeterminate) deserves attention. The large, red, tasty tomatoes are aromatic and produced on vines that really resist blight. Each can produce 40-50 fruits in a season.

Cool New Herbs

‘Purple Ball’ basil is delicious, beautiful, and compact. (Image thanks to Baker Creek Heirloom Seeds)

Baker Creek takes the cake when it comes to amazing new herbs for the garden. ‘Orangelo’ thyme (Thymus fragrantissimus ‘Orangelo’, Zones 5-8) looks extra inviting with its promise of true citrus flavor. I have to make space for a couple in my rock garden. There is no want for new and interesting basils. Small-space gardeners will love the deepest-purple, ball-shaped ‘Purple Ball, which reaches just under 12 inches. Its sweet, fragrant, darkest purple leaves will look great in salads and pasta. Baker Creek’s ‘Evivi Ntor’ African basil, originally grown and obtained from the Ewe tribe in Ghana, is described as having a sharp, peppery, citrusy flavor. It is also remarkably heat-tolerant. Another basil for flavor and summer heat is Everleaf Thai Towers. The upright plants are slow to bolt, reach 2-3 feet, and have true Thai basil flavor.

Now’s the time to purchase seeds for these vegetables, if you are inclined to grow your own from seed (click here to learn how). Vegetable gardening is hot, so hot that seeds are selling out at record speed, so now is the time to buy them. You may also want to pick up a bag of OMRI Listed Black Gold Seedling Mix while you are at it. (Click here for my top ten vegetable gardening tips.)

Cold Frame Salad Gardening

Cold frames are like outdoor mini glasshouses for winter vegetable and herb growing.

Garden-fresh eating does not have to end in the fall. The onset of chilly weather means it’s time to enjoy cold-frame salad gardens filled with easy, cool-season greens, root vegetables, and annual herbs. These crops are fast to germinate and grow, and they will tolerate serious cold weather if your frame garden is properly placed, prepared, and maintained.

What is a Cold Frame?

In 2012 I co-wrote an article with John Everard about how to build your own cold frame. This is the cold frame that he designed! (See building details in the linked article below.) (Image by Jessie Keith)

A cold frame is a cross between a raised bed and a small, sunken, covered greenhouse. It is lowered into the ground to reduce winter freezing of cold-tolerant greens, herbs, and root vegetables. Most cold frames are designed with sturdy sides of either wood, stone, or brick, and they are topped with framed glass or plexiglass lids that can be lifted on unseasonably warm fall and winter days.

Cold frames were first popularized in Europe, where winter growing conditions are generally mild, but they are also useful for American gardeners. You can build your own cold frame or purchase a premade one. Building your own has its advantages because you can create something more for less, if you know what you are doing. For a great step-by-step building guide, please click here to read this article that I co-wrote with biologist and builder John Everard for Wilder Quarterly in 2012. John created a very useful design that can be sunk into the ground in our USDA Hardiness Zone 7 area.

Cold Frame Siting

Cold frames further south can be shallower because it’s warmer.

All cold frames should be placed in a somewhat elevated location with full sun and soil that drains well–standing water and vegetable cultivation do not go hand in hand. Some steps regarding cold-frame gardening depend on one’s location and climate. In the north, a cold frame should be placed in a sunny, south-facing spot close to the home. If you can, sink the frame a few inches below the soil level. The reflective heat from the home will provide a little extra winter protection, the south-facing sun will help heat the cold frame all winter long, and the added depth will reduce the chances of freezing on cold nights. Further south, you can choose a spot away from the home, and sinking the frame is not necessary. No matter where you live, be sure to be watchful of your cold frame on uncommonly warm winter days. Prop the tops open during the day to keep the internal temperature from getting too hot and stressing your greens.

Cold Frame Soil

Rich, dark soil is best for cold frame gardens.

Dark, lofty, highly amended soil that holds water well will yield the best vegetables. Start by amending the ground soil in the frame with good compost, like Black Gold Natural & Organic Garden Compost Blend. A 1:2 ratio of soil to compost is recommended, especially if the soil is high in clay or sand. Another option is to fill the bed with Black Gold Natural & Organic Raised Bed and Planting Mix. Adding a layer of compost as a protective mulch is also important and can serve as further insulation. (Click here to learn more about creating the best soil for raised beds.)

Cold Frame Salad Crops

Rather than harvesting whole lettuce heads, I recommend snipping away leaves for cut-and-come-again salads.

It is essential to grow cool-season, frost-resistant crops. These are largely cool-season greens, herbs, and root crops. There are lots of greens for the job such as mâche, kale, lettuce, mizuna, spinach, and Swiss chard. Any lettuce will do, but small, fast varieties are most favorable. Salanova baby lettuces (55 days from seed) produce sweet and crunchy heads of green and purple very quickly, and the looseleaf lettuce Baby Leaf Mix is a reliable cut-and-come-again mix. Spinach thrives in cool weather and may have smooth or savoyed (puckered) leaves. I recommend both the 1925 heirloom ‘Bloomsdale’, which has large, savoyed leaves and is slower to bolt than most, and the smooth-leaved ‘Corvair’, which is resistant to the fungal disease, downy mildew. Arugula cultivars vary in leaf shape, color and heat. The popular ‘Wasabi’ is an easy-to-grow selection with leaves that truly taste like hot wasabi, and the newer ‘Dragon’s Tongue’ is a visually pretty, finely cut variant with purple-red venation.

In the deep winter, cool-season root vegetables bulb up more slowly.

The best root crops include winter carrots and radishes. Radishes are by far the fastest, and my favorite variety for crisp, sweet flavor is the French breakfast radish D’Avignon. Click the following link to learn more about growing winter root crops and click this link to learn more about growing cool-season greens.

For delicate cool-season herbs, try cilantro, dill, and parsley. Cilantro likes it cool and may produce leaves throughout winter. When the weather heats up, it will produce starts stems of white flowers and bulbous seed heads that can be dried and crushed to make the spice coriander. Dill will bear ferny leaves that taste great in salads, spreads, and fish dishes. Lush clumps of curly or flatleaf parsley will also flourish in cold frames all winter long.

All of these plants can be directly sown into the frame from seed. They sprout fastest in the fall when germination temperatures are more moderate–between 70 and 40 degrees F. Some need to be sown on the soil surface, particularly the small seeds of lettuce, which need light to germinate. At sowing time, start by wetting the soil, and then gently sow and pat the seeds down. Follow up with a little more water to wet the seeds. Be sure to label all seed rows with labels showing the plant names and sowing dates.

Harvest salad leaves, herbs, and roots as needed through winter–I tend to use shears to trim off what I need on a given day. By early spring, the cold frame garden will begin to look tired. Feel free to clean it out and begin planting new vegetables for spring.

Five Ways to Maximize Small-Space Vegetable Gardens

Large pots and vertical gardens allow one to grow more in a small space.

Vegetable gardening is on the rise. Gardeners of all experience levels and backgrounds are growing their own food, whether they live in urban environments or spacious suburbs and countrysides. Those living where space is limited have extra challenges, which means that they must garden differently to produce enough food to enjoy all season. Here are some of the ways that we have used to grow fresh food where space and sunshine are at a premium.

Plant in Spacious Pots

Spacious, deep containers let gardeners grow more in small spaces, like this balcony garden.

If you have a sunny balcony or patio with just enough space for a couple of pots, choose the largest, deepest pots that will fill the space. Large containers (22 to 24 inches minimum) Let gardeners grow more produce, and they have deeper reservoirs for soil and water to encourage more root growth and reduce the need to water as often. The pots must have good drainage and be filled with a quality mix, such as Black Gold® Natural and Organic Raised Bed & Potting Mix. A couple of large pots, or one long, deep raised pot, will be vastly more productive than several smaller ones, so go big! (Click here for more tips on growing potted vegetables.)

Garden Vertically

Some vertical gardening systems, like the Gronomics Cedar Vertical Planter, are very sturdy and made to last.

Gardeners with a little more space, like a small, sunny rear patio or yard, should consider growing one or more vertical gardens. Clever vertical planters are being designed to allow lots of vegetables to be grown in a small space. There are also plenty of DIY vertical garden designs to consider if you are the creative type. Whether you choose a premade product or go for a less expensive make-your-own vertical garden, make sure that the design allows for easy irrigation, holds enough soil for plants to grow well, and will last for a long time.

Most upright planting systems are best suited to smaller vegetable crops, like greens, bush peas and beans, baby carrots, beets, bush tomatoes, bush beans, compact peppers, and bush cucumbers and squash. Fruits, such as strawberries and low-bush blueberries, are also good options. (Click here to learn more about growing blueberriesClick here to learn more about growing strawberries.)  (Click here to learn more about vertical vegetable gardening.)

Grow Small Edibles

Tempting Tomatoes® Patio Sunshine is a true dwarf cherry tomato that’s perfect for pots and hanging baskets. (Image by Proven Winners®)

Smaller vegetables and fruits are made for container growing, so choose varieties better suited to pot culture. This includes non-vining bush tomatoes, such as  ‘Mountain Merit‘ and ‘Celebrity‘, both AAS winners. The tiny, cute cherry tomato Tempting Tomatoes® Patio Sunshine is another excellent choice. These are just a few of the many quality little tomatoes available. Tiny bush basils are fun to grow at the base of potted tomatoes. Windowbox Mini from Renee’s Garden Seeds is a superior little basil that’s very easy to start from seed.

There are plenty of other compact bush vegetables,  such as ‘Bush Pickle‘ cucumber, the little butternut ‘Butterbush‘, and compact zucchini ‘Fordhook‘. If you like melons, the compact ‘Minnesota Midget‘ cantaloupe and short-vined watermelon ‘Bush Sugar Baby‘ both grow well sprawling from a large pot. Strawberries of all types are great for pots. The beautiful Berried Treasure® strawberries, with their double pink, red, or white blossoms, also yield delicious sweet berries through summer.

Root vegetables of all kinds grow well in containers. Carrots, turnips, beets, and radishes are among them. Just make sure that the pots are deep enough for good root development. Upright vegetables, such as tomatoes, peppers, and eggplant, should be staked or caged to supply added support. (Click here to learn more about my favorite miniature vegetables.) (Click here to learn about the best fruits for container growing.)

Hang Edibles

Strawberries grow beautifully in hanging baskets and are easy to harvest from them.

Some vegetables and fruits grow beautifully in large hanging baskets. As with the pots, go big to minimize watering and maximize performance. The best vegetables for hanging are cascaders, such as compact tomatoes, strawberries, dwarf cucumbers, and peppers. The new, compact Pot-a-Peño jalapeño pepper is ideal for hanging baskets. This variety is also a 2021 AAS award winner, so it is sure to perform well.

Rotate Potted Vegetables

Potted greens and spring herbs are great cool-season potted edibles to start the season with.

Vegetable gardening is a dynamic process. Gardeners have to shift from cool-season spring vegetables to warm-season summer vegetables back to cool-weather crops. In between, smart gardeners rotate their crops to continue the harvest and encourage garden health. Plan to harvest and plant, harvest and plant until fall to boost your garden’s yields and diversity of crops. Seasonal planting and rotation keep soil diseases and pests from taking hold.  (Click here to learn more about rotating vegetables.)

Maintain to Maximize Production

Place containers and gardens where they get maximum sunlight. Eight hours a day or more is recommended. Start with great soil that holds water well, has ample air space, and drains well. Black Gold®Natural & Organic Potting Mix is ideal for growing all types of vegetables in containers and it is OMRI Listed® for organic gardening. It’s wise to add a little Black Gold Earthworm Castings Blend 0.8-0.0-0.0, which is rich in nitrogen, to pots with greens and herbs. Change a pot’s soil every two to three years because peat-based potting mixes break down, lose structure, and acidify over time.

Fertilize regularly to encourage the best growth and production. Lots of vegetables are “heavy feeders”, which means they deplete nutrients from the soil fast. Apply a slow-release fertilizer formulated for vegetable gardening at the start of the season. For heavy feeders, like tomatoes, follow up with applications of a water-soluble fertilizer formulated for vegetables. This is especially important to do just before the fruits develop.

Lack of water is the main cause of container vegetable failure. During the hottest days of summer, daily water will likely be needed, especially if your pots are in the full, hot sun. At watering time,  water until its starts to run out of the pot drain holes. This indicates that the container is saturated. Thorough watering encourages deeper root development and stronger, more stable plants. 

If your time is limited, consider investing in drip irrigation for pots. It also helps to add an extra layer of porous organic mulch to keep surface water from evaporating. Leaf mulch, straw, or grass clippings are all great options for pots that break down quickly while providing a little extra protection. (Click here to read about the 8 best watering strategies for plants.)

When Should I Fertilize Seedlings?

“I bought Black Gold potting soil with fertilizer for my herb, tomato, onion, and pepper seedlings. Do I also need to use liquid fertilizer once the seedlings grow their true leaves?” Question from Kim of Hiram, Ohio

Answer: It is important to be timely when fertilizing seedlings to give them the best head start. With that said, fertilizer in the soil can actually inhibit the germination of some seeds. (The salts in fertilizers disable the uptake of water in some seeds, which reduces or stops germination.) So, we recommend starting seeds in a mix that does not contain added fertilizer. Black Gold Seedling Mix is perfect for all types of seeds, and Black Gold Natural & Organic Potting Mix is a little coarser and great for starting larger seeds, like sunflowers, squash, and beans.

From there, start feeding seedlings with a 1/2 dilution of water-soluble fertilizer formulated for vegetables after they have begun to develop their true leaves. As they become larger, you can graduate to a full-strength dilution. I recommend waiting until they are 4-5 inches before feeding them fully.

I hope that this helps!

Happy gardening,

Jessie Keith

Black Gold Horticulturist

How Do I Stop Dill from Seeding Everywhere?

“How can you stop dill from taking over your garden?” Question from Sylvia of Belle Plaine, Minnesota

Answer: The answer to this question is in the valuable flowers and seed heads of dill. Keep the seeds from dropping to the ground by eating the fresh flower heads in salads or dips, before they set seed. Of you can allow the dill seed heads to mature, and then collect the seed in bags to enjoy for pickling. It is fragrant, useful, and will last a long time in the spice cabinet.

As you have already found, if you let dill seeds drop to the ground, then they will sprout later in summer or even the following spring. If you have too many or do not like where they land, dig them and move them to your herb patch or simply scratch them away with a hoe. These delicate annuals are some of the easiest weedy herbs to weed out. Another option is mulching over garden beds in spring with a hefty layer of Black Gold Natural & Organic Compost. Dill seeds cannot germinate through several inches of compost.

I hope that these tips help!

Happy gardening,

Jessie Keith

Best New Herbs and Vegetables for 2021

The large-fruited ‘Orange Accordion’ is uniquely beautiful and delicious. (Image thanks to Baker Creek Seeds)

2020 was quite a year–with more downs than ups for most of us. One bright spot was the big boost in gardening nationwide. New gardeners arose from every corner of the country, trying their hand at raising their own vegetables, flowers, herbs, and house plants. It’s equally bright that this year offers no shortage of new and exciting herbs and vegetables. Promising new introductions, for both novice and seasoned gardeners, are diverse and many.

New 2021 Herb Introductions

The golden leaves of Drop of Jupiter have a delicate oregano flavor that is best suited for fresh eating in salads, soups, and sandwiches. (Image thanks to Proven Winners)

Herbs with improved performance and ornamental traits are always welcome in the garden. Here are my favorite picks from the wealth of new herbs offered by top seed vendors and online nurseries. (Click here for tips about how to grow different herbs.)

Several new and improved basils are offered this year, and two are on my to-get list. One that will be new to my garden, is the disease-resistant Amazel Basil® sweet Italian basil from Proven Winners®. The tasty variety has large leaves and is sterile, so it never flowers and stays sweet. Another is the highly disease-resistant ‘Rutgers Passion’, a new Italian basil available at Johnny’s Selected Seeds. The classic, large-leafed plants have notably sweet, aromatic leaves and are slow to bolt.

Amazel Basil® is sterile, so it always stays sweet and leafy. (Image by Proven Winners®)

The unusually ferny cilantro ‘Confetti’ is a tasty new variety from Johnny’s Selected Seeds that is fast growing and ideal for baby greens. It yields herbal greens in just 30-35 days from seed! If you prefer more traditional cilantro then grow ‘Marino‘, a new introduction from Park Seed. It has large, lush leaves and the vigorous plants are very slow to  flower, which means more cilantro for longer.

Proven Winner’s ‘Drops of Jupiter’ ornamental oregano is both attractive and delicious, with mild oregano flavor. Its chartreuse leaves look extra pretty when the numerous purplish-pink flowers appear in midsummer. The beautiful flowers are also edible and attract bees and butterflies.

New 2021 Vegetable Introductions

‘Green Light’ cucumber is a high-yielding, sweet, seedless cucumber that’s a 2020 AAS winner. (Image by All America Selections)

There are so many new vegetables on the market, it was hard to know where to start when choosing the best picks to present and try in my own garden, but I managed.

I jar pickles, so I always grow cucumbers. That’s why I could not pass up the 2020 AAS award-winning Beit-Alpha-type cucumber ‘Green Light‘. It has small, crisp, sweet, seedless cucumbers that yield early. Each compact vine can produce up to 40 cucumbers, and fruits may begin to appear as fast as 42 days from seed!

Edamame soybeans are making their way into American vegetable gardens where they are grown just like string beans. (Click here to learn how to grow string beans.) The new, prolific, early-yielding edamame ‘BeSweet‘ bears lots of flavorful beans excellent for steaming and eating from the pod.

Okra lovers can plant fewer plants and get all the okra they need with ‘Heavy Hitter‘. The new offering from Baker Creek Heirloom Seeds produces huge yields of tender, green okra pods over a long period of time. Harvest pods regularly to keep production booming.

‘Orange Accordion’ tomato is juicy, flavorful, huge, and ornate. (Image thanks to Baker Creek Heirloom Seeds)

Flavorful slicing tomatoes are my favorite, and the super disease-resistant heirloom-type tomato ‘GinFiz‘ from Johnny’s Selected Seeds is on the top of my list. It has the five traits that I look for in a tomato: sweet full flavor, beauty, vigor, excellent disease resistance, and good yields. Another impressive slicer I’ve chosen is Baker Creek’s large-fruited ‘Orange Accordion‘. It is reportedly very delicious and uniquely beautiful with its deeply lobed, accordion-shaped fruits of bright orange. Pot and patio gardeners will want to try Proven Winners® miniature Tempting Tomatoes® Patio Sunshine Cherry Tomato. The tiny tomato plants become covered with so many fruits that they start crowding the foliage. (Click here to learn how to grow tomatoes from seed to harvest.)

Tempting Tomatoes® Patio Sunshine Cherry Tomato is tiny but a productive powerhouse. (Image by Proven Winners)

Bell-pepper lovers should try the new disease-resistant, high-yielding ‘Karisma‘ bell from Park Seed. The blocky, thick-walled sweet peppers produce continuously throughout the season and turn from green to bright red. For even blockier sweet red bells borne in high quantities on larger plants, try ‘Double Up’–just be sure to cage the plants for needed stability. Small-space gardeners can try the new, compact Pot-a-Peño jalapeño pepper, which is ideal for container gardens. This variety also happens to be 2021 AAS award winner, which means it is sure to perform well. (Click here to learn how to grow your own peppers.)

Pot-a-Peño jalapeño is a 2021 AAS winner. (Image from All America Selections)

The deep-purple Asian eggplant ‘Shikou’ is a very early producer of tender, long, flavorful eggplants that produce one week earlier than many other varieties of its kind. It is remarkably heat-tolerant and will also withstand limited drought.

Summer and winter squash are not in short supply when it comes to new offerings. The perfect little golden patty pan ‘Lemon Sun‘ produces lots of little uniform squashes. It’s a good choice for baby vegetable growers. Winter squash lovers will swoon over ‘Harvest Moon‘, a long-keeping, blue-skinned winter squash with a pumpkin shape and bright orange flesh. The Burpee exclusive has heirloom looks, sweet flavor, and keeping power of up to a year. Those with less space can try ‘Goldilocks‘ acorn squash. The 2021 AAS winner displays lots of orange, sweet, and nutty acorn squashes on bush-type plants.

‘Harvest Moon’ is a new winter squash from Burpee with heirloom looks and great flavor. (Image by W. Atlee Burpee & Co.)

My fall vegetable garden will certainly contain the dusty purple, mini ‘Bonarda‘ broccoli. It looks beautiful, tastes delicious, and winters over well, from fall to winter, like a perennial. If planted in mid-fall, its small, colorful broccoli florets will be produced the following spring above white and green leaves.

Now’s the time to purchase seeds for these vegetables, if you are inclined to grow your own from seed (click here to learn how). Vegetable gardening is still hot, so hot that seeds are selling out at record speed, so now is the time to buy. You may also want to pick up a bag of OMRI Listed Black Gold Seedling Mix while you are at it.

Which is Better, Hydroponic or Potted Indoor Vegetables?

“Why should I continue to use Black Gold products for my indoor gardening projects, rather than switching entirely to hydroponics?” Question from Vicki of Brownsburg, Indiana

Answer: It depends on your home, budget, and goals, but I favor soil growing for lots of reasons. Either way, both methods have value. To help you make up your own mind, here are the plusses and minuses of growing in pots versus home hydroponic growing.

Indoor Potted Vegetables: Benefits and Problems

Five Benefits of Pots

  1. Least expensive
  2. Easy if you have lots of sunshine
  3. Less energy needed
  4. Accommodate larger and more vegetables
  5. Crops have more flavor

Five Problems of Pots

  1. Need more space
  2. More light may be needed
  3. More food, water, and pruning may be needed
  4. Attract fungus gnats and shore flies (Click here to learn how to manage these pests.)
  5. Can be messier.

If you are interested in taking this route, click here to learn more about how to grow potted herbs and vegetables indoors. Two great soils for indoor growing are Black Gold® Natural & Organic Flower and Vegetable Soil and Black Gold Natural & Organic Ultra Coir. Both are approved for organic gardening, hold water well, but also offer excellent drainage.

Home Hydroponic Vegetables: Benefits and Problems

Benefits of Hydroponic Units

  1. Faster yields
  2. Less messy
  3. Often all-in-one units
  4. Often compact units
  5. Often automated for easy use

Problems of Hydroponic Units

  1. Most expensive
  2. Accommodate fewer, smaller plants
  3. More energy needed
  4. Spread disease faster
  5. Encourage algal growth and can leak

I will let you be the judge, but I happily grow my indoor herbs in pots along my south-facing window. I’ve my basil already growing for the season.

Happy gardening,

Jessie Keith

Black Gold Horticulturist