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How Early Can Potatoes Be Planted in Zone 5?

How Early Can Potatoes Be Planted in Zone 5?

“How early can potatoes be planted in zone 5?” Question from Lisa of Berwick, Maine

Answer: Your last frost date is May 10th, and you have a growing season that is approximately 142 days long, according to the Old Farmer’s Almanac.  You can plant potatoes in the ground as early as four to five weeks before your last frost date, so that would be early April in Berwick, Maine. You can also plant them a bit later. Potatoes grow well in your cool summers. Keep in mind that there are early, mid-season, and late-season potatoes that take varying amounts of time to be ready for harvest, so consider this when choosing the best potato varieties for your garden. Generally, earlier types are better for northern climates. (Johnny’s Selected Seeds is a great potato source for your region.)

Planting Potatoes

Potatoes should be planted 6 to 12 inches apart in rows around 2 to 3 feet apart. They like deep, friable soil, so consider planting them in mounds amended with quality compost, such as Black Gold Garden Compost Blend, which is OMRI Listed for organic gardening. Cover each seed potato with at least 3 inches of soil. In your cold region, planting them a bit deeper might be wise.

Keep a watch out for Colorado potato beetles, and you should be set! (Click here to learn more about managing potato beetles naturally.)

Have a great growing season!

Jessie Keith

Black Gold Horticulturist

When Is the Best Time to Plant Corn in Northwest Oregon?

 

Best Time to Plant Corn in Northwest Oregon

“What is the best time to plant corn in Northwest Oregon at Zone 8?” Question from Joseph of Milwaukie, Oregon

Answer: Your last frost date in Milwaukie, Oregon is March 31st, and your growing season is approximately 222 days long, according to the Old Farmer’s Almanac. Corn likes to germinate when the soil and growing conditions are warm, and most corn varieties take between 65 to 75 days to produce ears if there is enough sunlight, warmth, and moisture. So, I would recommend planting your corn as early as mid-April. With such a long growing season, you can also start a second planting in mid or even late May, if you have space. (Click here to learn more about successfully growing and selecting sweet corn.)

Planting Corn

Plant corn in the ground in late spring, once the soil is warm and frosty mornings are long gone. Seeds should be planted about 2 inches deep, 8-12 inches apart, and kept lightly moist for good germination. Plant them in no less than 3 rows of 6 to ensure even pollination and good harvest. Provide full sun and tilled soil that drains well and has average fertility and a neutral pH. Working Black Gold Compost Blend into the soil before planting will increase success. Once temperatures heat up, plants will take off. Keep them well irrigated but not wet. Ears will be ready when they are plump, the husks are green, and the tassels have turned brown at the tops.

Happy gardening,

Jessie Keith

Black Gold Horticulturist

What Container Hydrangeas Will Grow Well in Partial Sun?

What Container Hydrangeas Will Grow Well in Partial Sun?

“I’m in a duplex, and I only have access to either morning sun or full evening sun for my containers. Which is best for hydrangeas in pots?” Question from Jack of Claremore, Oklahoma

Answer: Several compact, hardy hydrangeas will grow well in both light settings in your USDA Hardiness Zone 6 garden. Here are three tiny hydrangea varieties that I know will perform very well in either situation. (All just happen to be Proven Winners varieties, because they arguably carry the best hydrangeas.)

Container Hydrangeas for Partial Sun

1.Bobo® Panicle Hydrangea: Grow this variety in the location with the most sunlight. In summer, Bobo produces loads of white, upright flower panicles that age to rosy pink before they dry to tan in late fall. It ultimately reaches 3 feet high and 4 feet wide, so it needs a large container for the longterm. A half wine barrel would be a good size.

2.Invincibelle Wee White® Smooth Hydrangea: Smooth hydrangeas can take a little more shade. Wee White is a teeny hydrangea below 3 feet with mop-type flower clusters in summer.

3. Invincibelle Mini Mauvette® Smooth Hydrangea: If you like rosy pink flowers, then plant this 3-foot beauty. Its rosy pink pompon flowers will light up a container.

I recommend planting these in Black Gold Natural & Organic Ultra Coir, which is OMRI Listed for organic gardening. If you are planting for the longterm, I always recommend adding at least one part ground or topsoil to two parts potting soil. The combo will allow the plants to remain in the container for longer without needing to have the mix changed. Follow up by feeding with Proven Winners Continuous Release Plant Food.

Happy gardening,

Jessie Keith

Black Gold Horticulturist

Can You Grow Squash in Containers?

Can You Grow Squash in Containers?

“Is it possible to grow squash in a container?” Question from Anne Marie of Napa, California

Answer: Bush squashes grow beautifully in large containers. In fact, I plan to plant a few in my garden this year. The key is making sure that you choose a compact, bush-forming variety. You can find bush zucchini, summer squash, pumpkins, and winter squash. I plant mine in containers that are at least 24-inches across and 12 to 18 inches deep. Here are my top varieties for container growing.

Favorite Bush Squash for Containers

  1. Sunburst Scallop Summer Squash: Sunburst is a garden mainstay for me and is great to harvest at the baby stage. It is short-vined and produces lots of tasty yellow pattypan squash.
  2. Astia Container Zucchini: These tiny little zucchini plants were bred for container growing, and they are very tasty.
  3. Wee-B-Little Pumpkins: Tiny Wee-B-Little pumpkins grow on very short vines that take well to container growing.
  4. Honeybear Acorn Squash: Also on short, semi-bush vines, this AAS award-winning winter squash grows well in containers and is very sweet.
  5. Max’s Gold Summer Squash: Here’s a classic golden summer squash that has few seeds, great flavor, and grows on compact bushes.

Squashes need full sun. I recommend planting yours in either Black Gold Natural & Organic Potting Mix or Black Gold® Natural & Organic Flower and Vegetable Soil. Both are OMRI Listed for organic gardening. Plant two seeds in the center of each pot, about 1 to 2 inches down, and keep the seeds lightly watered until they sprout. Keep the most vigorous of the seedlings once it has started developing its true leaves–pluck out the other. Fertilize with a plant food formulated for vegetable growing once they begin to actively grow and keep the pot lightly moist. Never let it dry out severely.

I hope that this information helps!

Happy gardening,

Jessie Keith

Black Gold Horticulturist

How Do You Fertilize Grapevines?

How Do You Fertilize Grapevines?

“What is the best fertilizer for a grapevine?” Question from Deb at Lynbrook, New York

Answer: The truth is that grapes don’t require too much fertilizer if the soil is right. In fact, excess fertilization of vines encourages stem and foliar growth and discourages flowering and fruiting. Just picture an established vineyard in Europe. The grapes are old, stunted, and often growing in dry regions, but the oldest, most gnarled vines on the most well-drained soil produce the best wine grapes. Still, a little food is recommended on a yearly basis.

Fertilizing Grapes

Cornell Extension recommends the following fertilization regime with a 10-10-10 fertilizer for grapes in New York State. (Click here for the full document.)

  • First year – no fertilizer
  • Second year – 2 ounces ƒ
  • Third year – 4 ounces ƒ
  • Fourth year – 8 ounces ƒ
  • Fifth year & after – 16 ounces

Soil for Grapes

The more crucial factor regarding grape fruiting and success is soil type and drainage. First, most grapes prefer a slightly acid to neutral pH between 5.6 and 7, but some grape varieties also grow well at a slightly higher pH of 7.5. If soil pH is too acid or too alkaline, vines will experience various nutrient deficiencies, which will harm the growth and grape output. If your grapes have leaves that look stressed and unhealthy, I recommend you get a soil test for pH through Cornell Cooperative Extension (click here for more information).

Grapes also grow best in well-drained loam. Amending the soil at planting time with Black Gold® Garden Compost Blend and Canadian Sphagnum peat moss is recommended. Sand is another common amendment that will encourage drainage. Just make sure that your vines are planted where the soil drains quickly.

I hope that this information helps.

Happy grape growing!

Jessie Keith

Black Gold Horticulturist

How Do You Control Sandspurs?

“How do I get rid of sandspurs?” Question from Rena of Morehead City, North Carolina

Answer: Anyone with a yard or beach plagued with sand spurs, most commonly the southern sandbur (Cenchrus echinatus) and the coast or field sandspur (C. spinifex), knows never to walk barefoot. Their painful spurred seeds are covered with needle-like protrusions ready to pierce through skin and even thick clothing like denim jeans. They can also do great harm to children and pets. Thankfully, there are some methods for getting rid of them.

Pre-emergent Herbicides

I almost never advocate the use of chemicals, but really bad weeds like these require tough measures.  Most experts recommend using pre-emergent herbicides that keep sandspur seeds from germinating in your lawn. Pre-emergent herbicides only work on seeds, not plants. Apply pre-emergents just before your lawn has begun to actively grow and reapply 6-9 weeks later because sandspur seeds do not sprout at the same time. Pre-emergents designed to kill crabgrass, like Preen Lawn Crabgrass Control, also stop annual grasses like sandspurs from sprouting. Be sure to follow the manufacturer’s application instructions.

Post-Emergent Herbicides

These are chemicals that you use on weeds after they have sprouted. Very few post-emergent herbicides target sandspur, and most are quite toxic. There are some crabgrass killers that may target sandspurs, but research as shown that they are not that effective, so I do not recommend using them.

Mow Low

Mow your lawn on a schedule and never let it get over 4 inches high. In conjunction, be sure to irrigate it during dry periods to avoid stressing your grass. Mowing low can disable sandspurs from flowering and setting seed.

Plant Fresh Grass in Fall

In early fall, thatch your lawn and plant fresh grass seed suited to your growing area, such as a Bermudagrass blend. Grasses like these will compete with weedy annual grasses, like sandspur, giving them little space to grow. Be sure to fertilize your refreshed lawn once it has begun to grow to give it the best possible head start. There are lots of great organic fertilizers available for turf.

I hope that these tips help!

Jessie Keith

Black Gold Horticulturist

When Do You Prune Hydrangeas?

When Do You Prune Hydrangeas?

“When is the best time to cut back my Hydrangeas?” Question from Marlene of Lapeer, Michigan

Answer: When do you prune hydrangeas? It depends entirely on the type of hydrangea you are growing. Some bloom on new wood, some bloom on old wood, and still others bloom on new and old wood. Let me break it down by common species to make it simpler.

When to Prune Different Hydrangeas

Smooth Hydrangea (Hydrangea arborescens, USDA Hardiness Zones 3-9): Prune these hardy, resilient hydrangeas at any time. They bloom on both new and old wood.

Mophead and Lacecap Hydrangeas (Hydrangea macrophylla varieties, zones vary): Prune these hydrangeas in midsummer just after they bloom, if pruning is needed. They flower on second-year wood. Hardiness zones vary anywhere from 5-11, and mopheads tend to die back in their most northern ranges of hardiness, so they are not the best option for colder gardens where their flowers may be frozen back each year. Please check the hardiness of any variety before planting it.

Oakleaf Hydrangea (Hydrangea quercifolia, USDA Zones 5-9): Prune these hydrangeas in midsummer just after they bloom, if pruning is needed. They bloom on second-year wood.

Panicle Hydrangea (Hydrangea paniculata, USDA Zones 3-8): Prune panicle hydrangeas in late winter or early spring. They bloom on new wood.

Lots of newer reblooming hydrangea varieties bloom on both new and old wood, so they can be pruned at any time. Also, keep in mind that any dead or dying stems should be cut off to keep shrubs looking clean and attractive.

I hope that this information helps!

Happy gardening,

Jessie Keith

Black Gold Horticulturist

What Flowering Shrubs Do You Recommend for Front Landscapes?

Flowering Accent Shrubs

“I am looking for possibilities for flowering accent shrubs (other than roses) for the front of house landscaping.  I’d prefer something that blooms throughout the summer if it exists. My Zone is 6a.” Question from Diana of Fort Wayne, Indiana

Answer: There are several flowering shrubs with a long season of bloom that will grow beautifully in your USDA Hardiness Zone 6 climate. Here are four recommendations that are easy and attractive.

Flowering Shrubs for Foundations

1. Smooth Hydrangea varieties (Hydrangea arborescens): Tolerant of sun and shade, smooth hydrangeas are very hardy and native to your region. Some of the new varieties bloom for a long time in summer, and then their blooms remain on the plants and continue to look pretty into fall and winter. I love the many varieties sold by Proven Winners, such as their Invincibelles, among others. (Click here to view them.)

2. Abelia (Abelia hybrids): Abelias bloom and bloom through summer with small flowers of pink or white. Many also have colorful foliage and some are semi-evergreen. Ruby Anniversary is a wonderful compact selection with loads of tiny pink and rose flowers that I have growing in my front yard. Kaleidoscope abelia is another beauty with multicolored leaves and pretty little blooms.

3. Reblooming Yellow Potentilla (Potentilla fruticosa Happy Face®): These mounding 3-foot shrubs bloom all summer with golden yellow flowers. The foliage is very fine and plants are sun-loving.

4. Reblooming Azaleas (Rhododendron spp.): Encore® and Bloom-A-Thon® Azaleas will rebloom and some are even evergreen. I recommend them if you have slightly acid to acid soils with good drainage.

All of these flowering shrubs are tidy and look smart when interplanted with evergreens and perennials. All will become established more quickly with soil amended with Black Gold Garden Compost Blend. I hope that you like these suggestions.

Happy gardening,

Jessie Keith

Black Gold Horticulturist

What Garden Plants Grow in Sandy Kansas Soils?

What Garden Plants Grow in Sandy Kansas Soils?

“I’ve tried some plants and flowers that say they grow in sandy soil, but no success. Do I need to stick to container gardening or add something to the soil in my flower beds? Thank you.” Question from Susan of Wichita, Kansas

Answer: If you choose the right plants for your site and improve your soil’s fertility, you will have gardening success. Many garden plants naturally grow beautifully in sandy ground. It’s all a matter of finding the right plants, and often the legwork has already been done by professionals.

Kansas Garden Plants

Thankfully, this is the case in your state. The Prairie Star program is Kansas State University’s plant testing program for your area. Prairie Star annuals, perennials, ornamental grasses, and shrubs are supposed to be the best for Kansas gardens, Witchita included.

Native Kansas Garden Plants

I am also an avid native plant advocate because your natives are naturally adapted to your landscape. They are no-fail plants. The Dyck Arboretum of the Plains has lots of resources on landscaping with native plants in Kansas, including garden designs. And the Kansas Native Wildflower Society has a whole section on gardening with native wildflowers for your region.

Of course, you can also garden in containers a well.

I hope that this information helps.

Happy gardening,

Jessie Keith

Black Gold Horticulturist

What Medicinal Herbs Grow Well in Central Florida?

What Medicinal Herbs Grow Well in Central Florida?

“What Medicinal Herbs Grow Well in Central Florida? I moved to Florida and I want to know which native medicinal herbs to look for and grow here at my new home.” Question from Susan of St. Pete Beach, Florida

Answer: There are lots of medicinal herbs that will grow well in your Zone 9 garden. I recommend that you read our article titled Grow an Apothecary Garden: Flowers and Herbs for Healing as well as our article about growing an Herbal Tea Garden and one titled Garden Cold and Flu Remedies. Most of the herbs in these articles will grow well in your area. You can even grow your own healing fresh ginger indoors or outdoors in pots in Florida (click here to learn how)! I hope that these resources help.

Happy gardening,

Jessie Keith

Black Gold Horticulturist