Articles

Garden Water Features and Carnivorous Plants

A hummingbird cools its feet on the edge of Mike's favorite garden water feature.
A hummingbird cools its feet on the edge of Mike’s favorite garden water feature.

In the Pacific Northwest, weather continues to be warm to hot with little or no rain. We have had a few sprinkles, but not enough to give plants the moisture they need. Even with adequate moisture, some plants look stressed on hot days as they cannot absorb as much water through their roots as they are losing through their leaves. I have found that a temporary ‘fix’ is to spray the foliage with water as this seems to help reduce leaf wilt.

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Maintaining the ‘Statice’ Quo

This perennial statice, Limonium perezii is frost tender but tough as nails in salt air and coastal conditions.
This perennial statice, Limonium perezii is frost tender but tough as nails in salt air and coastal conditions.

“Where did you get those flowers?” my mother asked suspiciously when I presented her with a bouquet of papery dry blossoms. They were as deep blue as Egyptian lapis stone. The stems still held their heads high after the long walk home that hot summer day.

The moment she learned they had come from the neighbor’s garden Mom was on the phone. I heard mea culpas flooding the kitchen. Then she hung up to announce we would be taking them back because they were “everlastings”, and the neighbor wanted to dry them for her arrangements.
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Tried-and-True Early Summer Flowers

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Hartlage Wine sweetshrub of one of several resilient early summer bloomers in Mike’s garden.

Unseasonably warm weather continues here in the Pacific Northwest, and the plants are responding to it. In many cases they need supplemental watering earlier than what would be the norm. And while my lawn has remained green with no extra water, many plants are showing signs of stress with the heat. This is especially true for those grown in containers and newly planted color spots. I am very glad that I used Black Gold Natural & Organic Potting Mix in all my pots this spring because it has done an excellent job of holding moisture for my summer flowers. Continue reading “Tried-and-True Early Summer Flowers”

Peonies and Iris, Oh My!

Adelman 'Madame de Verneville'
The herbaceous peony ‘Madame de Verneville’ is a fine old French cultivar. (image by Carol Adelman)

As I mentioned in my April article, the spring season in the Pacific Northwest has been phenomenal but warm.  The winter was mild and many marginally winter-hardy plants survived.  Earlier this month we had weather in the 80’s, which is almost unheard of  in this part of the world.  Not only in my own garden but in others I’ve visited, many plants are blooming earlier than normal.  This has been most noticeable in common seasonal bloomers like iris and peonies. Weather is certainly one of the things happening in our garden that we cannot control; all we can do is make the best of it.

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Bold Summer Bulbs for the Garden

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Colorful late summer drama provided by bananas, cannas and elephant ears in a private Indiana garden.

Late spring is the perfect tome to add summer bulbs to landscape and container plantings. Why do we wait so late to plant the bulbs, tubers, and corms of various elephant ears, all sorts of lilies, gladiolus, oxalis, dahlias, and everything else deliciously summery from bananas to cannas? It is because  in most parts of the United States (especially here in the Southeast) soil temperatures are finally warm enough for tender tropicals, indigenous to Southeast Asia, South America, Africa, Mexico, and Polynesia, to survive and thrive.

Many summer bulbs acclimate well where summers are hot. And where winters are mild they may return even bigger and better the next year, if they are correctly sited in the right spot. But, most are best treated like summertime annuals – enjoy them, then replant more next year. Or dig and store them through winter, if you have the inclination.

So, how do you choose which summer bulbs to plant? It depends on the style of your landscape. A cottage garden would not look the same without drifts of elegant lilies, whereas a tiki hut begs to be surrounded by enormous elephant ears. The colorful leaves and hot flowers of cannas easily crossover from traditional Victorian to modern eclectic gardens. A butterfly garden must have Liatris. And, crinum, spider lilies, four o’clocks, and tuberose belong outside any traditional Southern home.

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The chartreuse leaves of Xanthosoma ‘Lime Zinger’ brighten a shady corner at Chanticleer Botanical Gardens.

Ornamental Banana

Nothing adds a tropical feel to a poolside like enormous banana leaves swaying back and forth in the gentlest wind. Some bananas are better suited to being containerized, so that they can be protected in wintertime. The cold-hardiest perennial banana for Zone 5-11 landscapes is the hardy banana (Musa basjoo), and one of the most compact is Musa ‘Dwarf Cavendish.’

Plant banana rhizomes in late spring, so that they can get well-established while the soil is warm. Though the entire clump will die back in winter, it will re-emerge even larger in circumference in early May and quickly shoot upwards to top out around 8-10-feet tall. Bananas need as much sun as possible and love humidity. Though you may see a flower on your plant, you probably won’t get fruit unless you reside in the Deep South. A consolation is that you can use banana leaves to wrap and grill meat for your own backyard luau.

Elephant Ears

A dramatic summertime focal point is the tropical elephant ear. This common name has been associated with several species to include Alocasia, Colocasia, and Caladium, as well as many similarly-shaped houseplants, including the chartreuse-leafed Xanthosoma ‘Lime Zinger.’ The thick, bulbiferous stems or bulbs vary some in appearance as does the showy foliage of these plants. Generally, the leaf tips of Alocasia point upwards like they have been lifted by the wind. Those of Colocasia, also known as Taro, appear more heart-shaped, presenting a flatter face with the basal tips pointing towards the ground, with the exception of a few smaller varieties and the enormous, gravity-defying Colocasia gigantea ‘Thailand Giant’. Caladium are much smaller, with very colorful foliage in various patterns in red, white, and/or green.

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Large elephant ears and cannas happily reside in water-filled pots at Longwood Gardens.

Both Alocasia and Colocasia grow best sited in part shade to full sun and planted in compost-rich, moisture-retaining soil. They also perform especially well in pots. A perfect potting medium for growing elephant ears in containers is Black Gold® Waterhold Cocoblend Potting Soil, which naturally retains water through the power of coir (coconut pith) and sphagnum peat moss. This potting soil is further enriched with beneficial earthworm castings and porous perlite and pumice for optimal growth and aeration.

A tip for success growing Caladium is to plant the bare tubers anywhere you like, from a traditional shady spot in the landscape to sunlit container, allowing them to adapt to their summer location as their leaves develop. They can tolerate being a bit drier in deep shade, but Caladium planted in full sun need constant moisture. They have to be lifted and stored in the fall, if you garden above Zones 10-11. Also, do not plant your Caladium too early in the cool spring soil, or they may rot.

Cannas

Cannas must be applauded, while we are covering big-leaved plants. These bold perennials grow in blazing heat with theatrical upright leaves ranging from two to ten feet tall and ever-blooming flowers from pastel pink, white, and bright yellow, to rich apricot, hot orange, and blood-red. Again, rich soil, consistent moisture, and sunlight are preferred by Cannas, with the exception of  the white variegated-leaved ‘Stuttgart’, which grows best in part shade.

Calla Lilies

A favorite flower of summer brides, the calla lily (Zantedeschia spp.) is not a true lily but a member of the Araceae. Grow solid green-leaved callas in moist sites in the garden, in containers filled with water-retaining potting mix, or sunk directly into a water garden. Variegated-leaved varieties prefer somewhat drier locations.

Rain Lilies

Rain lilies (Zephyranthes) are late-summer delights. Native to the arid Southwest, from Texas to Colombia, these low starry flowers burst into bloom almost overnight after a good soaking rain. Rain lilies will easily colonize an area when planted in full sun and well-drained soils.

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Calla lilies remain lovely for an extended period in both the garden and floral arrangements.

Spider Lily

A similar event occurs with the red spider lily (Lycoris radiata), aka the surprise lily or more aptly named hurricane lily. A globe-shaped cluster of shiny red blooms emerges on a bare stalk after a hard rain around the first of September, which coincides with the peak of hurricane season. After flowering, its broad, deep green leaves emerge to grace your garden through the entire winter. This bulb wants well-drained soil and lots of sunlight.

Lilies

Depicted in ancient art, stylized in woven tapestries, and still gracing our homes and altars, lilies (Lilium spp.) are beloved for their recognizable, open, six-petaled flowers and intensely sweet fragrance. True cultivated lilies are grouped by type, Asiatics, orientals, martagons and trumpets among others, which can be extremely confusing to distinguish. (A good reference can be found at The North American Lily Society website.) Lilies are long-lived perennials that prefer to grow in full sun to part shade, again in extremely well-drained soils with adequate moisture.

A lily planting secret that was shared with me by Becky Heath of Brent and Becky’s Bulbs, is to plant lily bulbs on their sides. Due to their open, layered bulbs (reminiscent of a blooming onion at your favorite steak house), lilies may trap water in-between their layers in the wintertime, which can cause rot. This unusual side-planting method does not harm the way lilies grow and works well in both garden beds and containers.

This article offers just a quick sampling of the many marvelous summer bulbs available. To learn more about the wide variety of summer bulbs that may be perfect for your garden, check out the Brent and Becky’s Bulbs website. Tony Avent’s Plant Delights Nursery in Raleigh, North Carolina is another good source. Or just go local, and visit your favorite local garden center.

 

 

A Guide to Edible Flowers

A bumblebee pollinates the edible flowers of borage.

Well-placed culinary blooms are surprisingly delicious and bring unique and elegant beauty to the table. Many edible flowers are common garden plants, which provides even more encouragement for everyday gardeners to add them to everyday recipes. They are not just for chefs and connoisseurs.

Edible flowers fall under two categories: herbal flowers and edible garden flowers. Most garden herbs have edible flowers—though you always want to double check before chowing down on any bloom. Some garden ornamentals also have edible flowers, but only a handful of these are really tasty.

Beware Florist’s Blooms

There are a few caveats to eating edible flowers. First, never eat flowers from a florist because they have often been sprayed with chemicals. In turn, never spray garden flowers you intend to eat. Even pesticides and herbicides approved for organic gardening are a no-no.  Flowers are too delicate to wash, so if you want to eat them, let nature tend to them.

Cultivating Edible Flowers

For the cultivation of all the herbs and flowers highlighted in the tables below, provide full sun, average moisture, and quality garden soil with good drainage. The addition of OMRI Listed Black Gold® Garden Compost Blend will improve performance. A granular fertilizer formulated for flowering is also recommended.

Pretty chive flowers and a sweet onion flavor to fresh cucumber salad.
Pretty chive flowers add a sweet onion flavor to fresh cucumber salad.

A favorite springtime edible flower recipe is chive flower cucumber salad. It’s very easy to make and will compliment lots of spring meal plans. To make the salad, thinly slice 2 cucumbers (peel them if they are thick-skinned), then make a dressing that combines 2  tablespoons white wine vinegar, 1  teaspoon sugar, 1/3 cup heavy cream, 1 shallot finely minced,  1 tablespoon chopped fresh dill. and salt and pepper to taste. Mix the dressing and cucumbers then toss with 2 to 3 chive flowers that have been trimmed and gently broken apart. The chive flowers lend a delicate oniony flavor to the salad that makes it extra delicious!

 

Popular Edible Herb Flowers

Herb Look & Flavor  
Basil  (Ocimum spp.) If your basil plants flower in summer, eat the zesty purplish or white basil blooms and green buds. They taste lovely on salads and veggies.  Ocimum-basilicum-Cinnamon-JaKMPM-300x200
Borage (Borago officinalis) Pure violet blue and flavored like cucumber, these early summer flowers look and taste lovely on any fresh savory dish.  Borago-officinalis-1024x682
Chives (Allium schoenoprasum) Beautiful tufts of mauve blooms with pure chive flavor bedeck these plants in spring. Break them apart and use in place of chives.  100
Cilantro (Coriandrum sativum) Umbels of lacy white flowers are the precursor to coriander seeds. Use the fresh tasting spring or fall blooms in place of fresh cilantro.  Coriandrum sativum2
Dill (Anethum graveolens) Yellow or chartreuse green dill flowers appear in spring or fall and taste as dilly as the leaves but add good looks to dishes.  Dill
Lavender (Lavandula spp.) Lavender is a common culinary herb in the South of France. The flavorful summer flowers add charm and flavor to grilled lamb or herbed goat cheese spread.  Lavender
Mints (Mentha spp.) All mints have wonderfully minty summer flowers that may be white or purplish. Add them to any dish calling for fresh mint, from tabouli to desserts.  Mentha
Oregano (Origanum officinalis) The purple or white summer flowers of oregano lend potent oregano flavor to savory dishes.  050
Thyme (Thymus spp.) The early summer flowers of thyme may be pink, white or purple and taste delicately of thyme. Sprinkle them on spring cream soups or salads.  Thyms.ashx
Rosemary (Rosmarinus officinalis) Blooming intermittently in fall, winter or spring, rosemary flowers are white or purplish and pair well with grilled meats and savory salads.  Rosemary

 

Popular Edible Garden Flowers

Pot Marigold (Calendula officinalis) These cheerful cool weather annuals have flowers in warm colors. Their petals have a spicy flavor and lend interest to salads.  Calendula
Daylily (Hemerocallis spp.) Daylily buds and petals taste almost like lettuce. The summer blooming plants have colorful flowers in almost every shade but true blue.  Hemerocallis 'Red Razzle Dazzle' JaKMPM
Marigold (Tagetes spp.) True marigold flowers have a sharp, somewhat citrusy flavor that lend good flavor to heirloom tomato salads.  tagetes
Monarda (Monarda spp.) The zesty, somewhat minty flavor of summer blooming Monarda flowers can be used to decorate salads or desserts.  045
Nasturtium (Tropaeolum majus) Summer blooming nasturtiums have flowers that are peppery tasting, like watercress. They are beautiful and add appeal to fresh savory dishes.  Nasturtium
Pansy (Viola hybrids) Violas are cool season flowers with a mild, sweet flavor and bright color. They can be candied and used to decorate desserts.  Viola Sorbet Lemon Chiffon JaKMPM
Rose (Rosa spp.) Rose petals can be used alone in fresh confections or used to make rose water. Be sure to only use garden flowers that have not been sprayed or treated in any way. Candied rose petals taste lovely with almond desserts.  Blushing Knock Out
Violet (Viola spp.) Spring blooming wild violets have a stronger sweet violet flavor than hybrid pansies, but they can be used in the same way.  OLYMPUS DIGITAL CAMERA

Growing Western Wildflowers

Are you a failed wildflower grower? Growing California poppies (Eschscholzia californica), lupines, Coreopsis, and five-spot (Nemophila maculata) in the arid West is downright tricky. We sow them, and they refuse to sprout. It’s rare they return for a second season. So, what’s the problem?

First off, these western species are ephemeral annuals, meaning they live for just one season then go to seed before summer. Most of them need the full extent of our brief winter rains to get a head start on completing their life cycle prior to the long drought to come. Therefore they should be sown by Christmas to receive the rain that is essential for early spring bloom. Yet all too often they are sown during the planting frenzy of spring, which is far too late in much of the West. This leaves too short a season for them to become established and finish their life cycle.

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Western Native Plants for Home Gardens

Whenever I hear someone speak of native plants for home gardens, it always makes me wonder what is considered “native”. I live in Oregon, so when a gardener tells me about native plants in home gardens and elsewhere I wonder, “Is this plant from Oregon or does a plant growing in Washington or California also count as a ‘native'”? After all, nature did not draw the state boundaries. Continue reading “Western Native Plants for Home Gardens”

Flowering Plants for Great Fall Color

From mid-September through October, here in the Pacific Northwest, we have an abundance of plants for great fall color. Whether it is foliage, stems, bark or flowers, the color array is almost unbelievable. I think the reason we do not see more of these plants is that many times they reach their prime in the fall and this is not a time of year that we are generally visiting garden centers or viewing home gardens. Here are some ideas that I would like to share after recently visiting various private gardens.

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