Category Archives: flowers

Light Up Shady Corners with Variegated Hardy Ginger Plants

Posted on October 9, 2018 | 5 comments

White Feather Hardy Ginger in July

One of the advantages of belonging to a garden club is that you are introduced to new plants, as well as new friends. Last fall, in one of my garden clubs’ plant swaps, I came home with White Feather ginger (Zingiber mioga ‘White Feather’). My friends told me that it was a hardy ginger plant that would survive our winters. They also mentioned that its cousin ‘Dancing Crane’ was astounding with beautiful white and green variegation.

I planted White Feather in a shady location in my Virginia garden, inserted a label, and forgot about it until this year. I had noticed that something was emerging in April. In July, the plant was about 2 feet tall and wide and I could clearly see the pretty variegation.  White Feather is a rhizomatous perennial that will spread over time in a nice, divide-and-share-with-your-friends way.

This is such a pretty plant I do not know why more people do not grow this. Despite the tropical appearance of the leaves, it is hardy to zone 6, which means I do not have to dig it up and bring it inside in the fall. The variegated leaves light up a shady area and favor an oriental appearance. So far, there have been no pests or diseases.

White Feather Hardy Ginger in October

According to Tony Avent, owner of Plant Delights Nursery in North Carolina, there are three variegated forms. The most striking is Dancing Crane, which has white color in the middle of the leaves. White Feather has white color along the edge of the green leaves, and Silver Arrow is more subdued with lightly flecked leaves.

This is not the plant that produces the ginger root you buy in a store and grate for culinary use (Zingiber officinalis). This particular type is called Japanese ginger, mioga, or myoga ginger, and is grown for young spring shoots that are eaten like asparagus and for flower buds that are used in soups, tofu, sushi, and pickled vegetables.

Close Up of White Feather Flower

I have been looking for the flowers since September. Today, in October, I finally found several flowers which are only visible if you know to look down and under the foliage. They are ephemeral, a ghostly shade of yellow, certainly not something you would pick for a vase. They are only an inch off the ground and about 3 inches wide. They dissipate quickly; they seem to dissolve back into the ground after a few days. Still they add to White Feather’s intrigue, and by now my plant has grown to about 3 feet tall and 2 feet wide.

I recommend White Feather and I can see why others raved about Dancing Crane. Dancing Crane has more striking variegation and if it performs as well as White Feather, it would be a great addition to a garden. Next year, plant these hardy gingers in your garden to light up a shady corner.

Several White Feather Flowers

 

 

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Darling Diva Dahlias

Posted on October 2, 2018 | 3 comments

Like chrysanthemums, many people associate dahlias with the fall but dahlias can bloom from the beginning of summer to frost. Dahlia flowers are available in a wide range of sizes, colors, and shapes. Each bloom can be 2 inches across to more than 10 inches, in all colors except blue. Plants can reach one to 6 feet tall. Some plants have beautiful dark foliage instead of green leaves. Although there are 40 plus species there are thousands of cultivars. In addition, there are numerous forms such as the single, peony, anemone, collerette, star or single orchid, double orchid, cactus, waterlily, ball, and pompom.

Planting Tubers or Seed

To grow dahlias, you can either purchase tubers or start them from seed. If you purchase a tuber that is a named variety you will know exactly what the plant will look like. Plus, if you purchase cultivars that have been trialed and proven to do well in this area, you will have a good chance of success.  Seed is cheaper than tubers but there is a lot of variability with plant vigor and flower color. Although the seed will grow and produce a plant with pretty flowers for the garden, the flowers may not be exhibition quality.

Tubers can be planted outside in the ground after the average last frost date (Mother’s Day in the Washington DC metro area). Tubers also can be started indoors in April in containers under fluorescent lights or by the window to initiate growth. Seed should be started indoors under lights because planting seed in cold soil may retard the germination rate. Starting seed outdoors in May will only delay the time to reach blooming stage.

Caring for Dahlias

“Put the tuber in a four-inch hole and cover so that it is just peeking through. This way you can see the growth. When it grows, add more soil,” advises John Spangenberg, member of the National Capital Dahlia Society and owner of Crazy 4 Dahlias. John is a long time dahlia enthusiast who also sells tubers from his website.

Growing a dahlia plant is similar to growing a tomato plant: full sun and plenty of water and food. A dahlia can grow in less than 6 hours of sun but would not produce as many flowers. After planting the tubers, insert stakes such as tomato cages or posts. In the beginning, dahlias will require plenty of water, generally one inch of water per week. Dahlias are heavy feeders and will need fertilizer throughout the summer. Slow release fertilizers also work well. Dahlias appreciate a leaf or straw mulch to keep the tubers cool and to prevent weeds.

Encouraging More Flowers

In the beginning of the growing season, John recommends topping the plants to encourage bushier, sturdier plants with more flowers. The center bud (not flower bud but central growth) should be pinched back. “When you see three to four sets (or pairs) of leaves, break the center top off,” explained John.

Later in the season when flower buds appear, disbud or cut off smaller, lateral flower buds to encourage the top bud to form a single, larger flower. When a dahlia flowers, there are three stems with three buds in a v-shape. When the outer two smaller buds are the size of peas they should be cut leaving the center flower bud.

“The more you cut your flowers, the more flowers you get,” said John. If you don’t cut a flower for a vase, make sure you at least deadhead them. Deadheading is cutting off and disposing flowers that are past their prime to encourage the plant to produce more flowers.

Throughout the season, make sure the plant is well staked as it grows, feed it, and make sure it gets enough water.

Saving Tubers in the Fall

Dahlias are native to Mexico. Here in Washington DC they are treated as tender perennials and may or may not come back the following year. In order to ensure that the plants can be grown again next year, most gardeners lift and store the tubers in October.

“In the fall when get the first frost, cut the plant a couple of inches above the ground and let sit for a week or dig them up,” explained John. “You want to have the eyes develop and swell to be able to see them well. It helps to see the eyes when dividing the tubers. You can divide in the spring or fall but it is easier to divide in the fall.”

Dahlia tubers are swollen roots. Each tuber has to have an “eye,” which is a growing point in order to grow. From that eye the stem will emerge. In May, a single tuber with an eye is planted for a single plant. In the fall, when the plant is lifted out of the ground, there will be more new tubers joined together in an area called the crown. The “eyes,” or viable growing points, are in the crown. This can be stored as is or divided to create more plants.

John uses vermiculite in a box to store his tubers but there are many methods to store tubers. He finds vermiculite works best because it absorbs and releases moisture. Tubers should be in the coolest place in the house where there is constant temperature such as a crawl space or basement or a closet next to the outer wall of the house.

Because they are native to Mexico, one would think that dahlias would be easy to grow here with our sunny, warm summers. In fact, dahlias are native to a mountainous region in Mexico with more wind, less humidity, and cooler temperatures. Thus dahlias grow very well in the Pacific Northwest but have some difficulty in the mid-Atlantic. They need quite a bit of water, yet as heavy feeders, the rain can leach the nutrients. Plus the humidity can encourage disease. “In this area, we have issues with slugs, earwigs, rabbits, groundhogs, and deer,” said John. “Plus we have noticed that Japanese beetles prefer white and yellow flowered dahlias.”

Selecting Dahlias for Washington DC Metro Area

To choose a dahlia that performs well here, look to the National Capital Dahlia Society for recommendations. A branch of the American Dahlia Society (ADS), the National Capital Dahlia Society is comprised of dahlia enthusiasts and breeders who meet on a regular basis. Every year they manage a trial garden at the Agricultural History Park in Derwood, MD. “The display garden is a trial garden to test new introduction from across the country to see how they do here. We look at bloom quality and plant vigor and report this to the American Dahlia Society,” said John. Later in October, the Society members will dig up the dahlias at the trial garden and demonstrate how to save the tubers (open to the public). They also sell tubers next year so if you are interested in growing dahlias that do well in the Washington DC metro area, contact them via their website: http://www.nationalcapitaldahlia.org.

This past weekend, the National Capital Dahlia Society held their annual dahlia show at Brookside Gardens where flowers were judged using the ADS criteria. The photos in this article are dahlias from the Court of Honor, those dahlias that have been selected from all entries for final judging. The video is a scan of the Court of Honor.

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Mid-Summer Review of my Virginia Garden

Posted on August 1, 2018 | 3 comments

Now that it is August and my Virginia garden has suffered extreme weather, pests, diseases, and deer, I can definitely identify my survivors, or rather, my summer successes.

First, my pink and purple garden. This spring I was gifted four different annuals that bloom in the pink to purple range. In this full sun patch near the front door, I have Valiant Orchid vinca from Pan American Seed with extra-large flowers. Vinca is an impressive annual, it flowers all summer long and does not have to be deadheaded. It does not mind the heat, humidity, and periods of dryness. I also like the way the plant gets bushy, it fills its space. Next to them are Proven Winners Angelface Steel Blue angelonias. Often called summer snapdragons, angelonias provide vertical structure. This particular cultivar grows to 2 feet and has large purple flowers that do not need to be deadheaded. They are drought tolerant and deer resistant. I know because they are next to a volunteer dahlia that gets nipped by the deer every so often. Within this space are several shorter angelonias from Pan American Seed called Serena Blue. These perform just as well, just a bit shorter with smaller blue flowers to add a horizontal layer to the garden. At the ground level, to cascade through the plants, is Proven Winners Supertunia Vista Bubblegum. This petunia cultivar has bloomed all summer long, no pests, no diseases. I love the pink and purple combination plus the varying heights.

If I could duplicate this palette next year I might add the purple foliage oxalis. Mine are in a container along with other bulbs from Brent and Becky’s Bulbs. The oxalis pips were planted in April and I put the container outside in May after the last frost. All of the bulbs have performed well but I am amazed at the longevity of the oxalis as well as the versatility. They have been blooming small pink flowers from May to August and the purple foliage does not seem fazed by our heat and humidity. Because they are low growing, the foliage can “hide” the “feet” of plants in containers.

Speaking of containers, I could have planted either the purple oxalis or the pink Bubblegum under the Black Diamond Best Red crape myrtle.  J. Berry Nursery sent the crape myrtle in the spring as a small plant and it has grown so fast I replanted it into a larger container. The Black Diamond series has very dark foliage and can withstand being a summer container plant. I have always liked the use of trees as container plants on patios and decks. However, because this crape myrtle is hardy to zone 6, it will not overwinter in a container so in the fall I will plant it in the ground. Eventually this tree will grow to 12 feet tall and 8 feet wide and I am sure it will be a stunner with the dark foliage and red flowers!

J. Berry Nursery also introduced me to their tropical hibiscus series called Hollywood Hibiscus. The Hollywood Hibiscus plants have many long lasting flowers in a wide range of flower colors. Of my five plants, I have kept my two favorite flower colors, Chatty Cathy (yellow) and Social Butterfly (yellow/orange), in containers on the deck. In the fall I plan to bring them indoors to overwinter them and “save” them for next year. I planted the other three in with the irises in the front of the house. After I trimmed the foliage on my bearded irises, I discovered that First to Flirt (pink), Jolly Polly (pink), and Bombshell Red (red) were perfect for filling up the space and providing color among the truncated iris foliage.

Chatty Cathy

 

 

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Herbs in the Garden Attract Beneficial Insects and Pollinators

Posted on July 1, 2018 | 2 comments

small thyme flowers

The herbs in my garden live among the annuals, perennials, vegetables, and shrubs. I have not designed a separate, formal herb garden and now every new herb plant gets tucked in any space I can find. If I remember and have time, I harvest the leaves for teas or for cooking. If I forget or get too busy, the herbs just thrive without me. By summer, they are blooming along with everything else but that’s okay, they still serve a purpose. Even if I didn’t get to harvest them, they are helping the tomatoes, peppers, cucumbers, and beans by attracting beneficial insects.

In addition to attracting pollinators such as bees and butterflies, flowering herbs can attract beneficial insects that will destroy the “bad” bugs. These beneficial insects are either predators, i.e., they eat harmful bugs, or parasites–they lay their eggs in or on the “bad” bug which release larvae that consume the bug.

Many of these beneficial insects are small, thus preferring easily accessible nectar chambers in small herb flowers. In many cases the adult insects need the nectar and pollen of the herb flower while the “babies” or larval stage eat the insects we don’t want in the garden. For example, the larval stage of ladybugs, which look like mini alligators, consume aphids, many beetle larvae, and spider mites, among others. One can attract ladybugs into the garden by planting cilantro, dill, fennel, oregano, thyme, and yarrow so the adult form, the ladybug, can enjoy the pollen.

pollinator on oregano

Lacewings are beautiful slender green insects with translucent wings. Their larvae, known as aphid lions, eat a large number of aphids –thus they have a lion’s appetite — and many beetle larvae to name a few. Lacewings are attracted to angelica, caraway, tansy, yarrow, dill, fennel, and cilantro.

Parasitic wasps are small, non-stinging wasps. There are many types but they all destroy pests by laying eggs inside or on the pest. The eggs hatch to release larvae that consume the prey, eventually killing it. Parasitic wasps will destroy tomato hornworms, bagworms, cabbage worms, Japanese beetles, and squash vine borers. The wasps are attracted to dill, fennel, lemon balm, thyme, yarrow, and cilantro.

Tachinid flies look like houseflies but as parasites, they destroy many kinds of caterpillars, Colorado potato beetles, cucumber beetles, Mexican bean beetles, and Japanese beetles in the same manner as parasitic wasps.  The flies prefer cilantro, dill, fennel, parsley, feverfew, and chamomile.

Hover or syrphid flies look like small wasps because they have yellow bands but they don’t sting. The adults–the flies–will “hover” as they drink nectar from dill, fennel, feverfew, lavender, mint, yarrow, and cilantro flowers. The larvae will consume aphids, cabbage worms, other caterpillars, and mealy bugs.

hover fly in the cilantro

Herbs also help beneficial insects by providing pollen and nectar when other annuals or perennials are not blooming yet.  For example, cool season herbs such as cilantro and chervil bloom in the spring, providing an early source of pollen to beneficial insects.

Many aromatic, perennial herbs, such as oregano, thyme, and lemon balm, are not eaten by deer and small animals so they become permanent fixtures or “houses” for beneficial insects. Plus herbs are usually planted in bunches or become small shrubs, providing a large “neighborhood” for these insects.

a beneficial insect attracted to agastache

However, despite the number of plants in the garden, these insects will only stay if there is a need, i.e., food for them, and if the surroundings are hospitable. Beneficial insects seek large populations of bad bugs in order to feed their own population. Some beneficial insects wait to lay eggs until there is enough “food” so it may be that the appearance of many aphids is the trigger to have ladybugs increase their own population because they now know there is plenty of “food.” In other words, if there a lot of aphids on bearded irises, wait to see if many ladybugs will arrive on the scene to correct the problem before reaching for an insecticide. Spraying chemicals may kill or alter the balance of beneficial insects. It is now known that plants that are under attack by bad bugs release chemicals which are signals to the particular type of beneficial insect that would be needed to correct the problem. There may be a little or minimal plant damage in order for the beneficial insects to receive the signal to come to that plant.

Herbs can be useful for their flowers as well as their foliage. Planting several different types of herbs in the garden helps protect the rest of the plants against pests.

 

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Native, Deer-resistant, Summer-flowering: What More Can You Want in a Shrub?

Posted on June 4, 2018 | 2 comments

A single blossom on a young Calycanthus ‘Aphrodite” in my Virginia garden

I have been admiring Carolina allspice (Calycanthus floridus) in other people’s gardens for a few years, taking photos whenever I can. This is such a beautiful plant I don’t know why other people don’t grow it more often. A native, deciduous shrub, Carolina allspice grows to 5 to 8 feet tall, is deer resistant, and has no major pests/diseases. The leaves are green and large for a small bush and the brown red flowers bloom all summer long.  Pollinated by beetles, the 2-inch flowers look like a cross between a star magnolia (outer strap-shaped petals) and a lotus (curved inner petals with a central, raised button). In the fall, the leaves turn golden yellow.

Calycanthus ‘Aphrodite’ at High Glen Gardens looks like a cross between a star magnolia and a lotus blossom

Fortunately Spring Meadow Nursery read my mind and sent me the cultivar Aphrodite two years ago as part of their Proven Winners ColorChoice collection. Aphrodite’s flowers are redder than the species and are supposed to smell like apples. In my Virginia garden, my 3-foot tall youngster is thriving under the edge of a red maple’s canopy, so it receives partial sun. This past week, Aphrodite bloomed for the first time.

I cut the flower and put it in a vase. There was no scent but I have read that young plants do not always have a fragrance. Apparently this attribute comes with maturity. I did crush a leaf though and the camphor scent was nice, almost lemony. It reminded me of a friend who would put eucalyptus branches in her car so the heat would release a pleasant scent. The bark too was aromatic when I scratched it.  Mark Catesby said the bark was as “odoriferous as cinnamon” although I think the scent is more like a cross between lemon and camphor. When my plant matures and I get more flowers I will use them for flower arrangements. In addition to the flowers, I could use the leaves and branches for potpourris. But I think I will pass on the car trick, it may create a strong odor, more like a disinfectant.

Regardless of its scent, Carolina allspice is a great shrub for the Washington DC metro area. Aphrodite certainly holds great promise in my garden.

Mature shrubs of Calycanthus ‘Aphrodite” at High Glen Gardens, Frederick, MD

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June Pegplant’s Post Giveaway: Shrub Rose ‘Sunrosa’ Courtesy of Gardener’s Confidence

Posted on May 21, 2018 | Leave a comment

Thank you Gardener’s Confidence for sponsoring the June Pegplant’s Post giveaway. Pegplant’s Post is a free monthly newsletter for gardeners in the Washington DC metro area, featuring local gardening events, books, a giveaway, and articles, tips, and advice. With the June issue, one lucky subscriber will win Sunrosa, a fragrant, pink flowering, dwarf shrub rose. Disease-resistant, this 2-feet bush blooms all summer long.

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Honesty, Money, and Sincerity: What More Could You Want in a Plant?

Posted on April 30, 2018 | 1 comment

silver dollar flowers

Some plants provide beauty in the spring and then step back off stage, only to be forgotten until next spring. Others provide beauty in the spring, come back with an encore in the fall, and stay with us all winter long. The silver dollar plant (Lunaria annua) is blooming now in April in the Washington DC area. A member of the cruciferous family (Brassicaceae), these flowers have the typical four-petal cross shape but the petals seem wider and larger than the yellow roadside mustard flowers. The plant is 2 to 3 feet tall and the fragrant flowers are purple butterfly magnets although there is a white variety. Usually there are masses of blooms because the plant self-seeds but the plant looks best this way since the flowers are small.

purple flowers at Carlyle House, Old Town, Alexandria

In the summer, the flowers form green, flat but oval-shape pods with large seeds inside. As the pods mature, the green disappears, the seeds drop, and what is left is the translucent papery thin membrane of each pod. The encore to their pretty spring show of flowers are these shimmery flat pods. The pods dry so well, i.e., hold their shape for so long, they can last the winter in dried flower arrangements and wreaths.

basket of dried, mature seed pods

The silver dollar plant has many common names. In England the more popular name is honesty, which refers to the frankness of the plant in displaying its seed in the pods (because some remaining seeds appear in the transparent pods). Other common names are white satin flower since the mature pods are shiny like satin, moonwort because the translucent pods are round like the moon, and money-in-both pockets because the mature pods look like coins.

If you are growing this from seed, you may not get flowers the first year. Technically it is a biennial but once it starts flowering and drops seed, it will just appear every year as if it were a perennial. Treat it like a woodland plant, provide part sun and part shade in well-drained soil. Hardy to zone 5, the silver dollar plant is deer resistant.

close up of seed pods

A native of Europe, this was one of the first plants brought by the colonists to the New World. The plant is quite common in colonial gardens. Most local nurseries sell the plant or seed.

In the language of flowers, the plant represents honesty, money, and sincerity. In witchcraft, the silver dollar plant is protective, known for keeping away monsters. The plant also is used in spells for prosperity – the mature seed pods resemble coins and promises of wealth. Either way, having a basket of silvery coins has got to be good for you. Grow some honesty, money, and sincerity and share the wealth.

 

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Containers with Summer Blooming Bulbs: Living Flower Arrangements

Posted on April 25, 2018 | 2 comments

Earlier this month, I had the opportunity to create a container with summer blooming bulbs, a “living flower arrangement.” I along with a group of garden writers and communicators visited Brent and Becky’s Bulbs in Gloucester, Virginia. I have known Brent and Becky for years but have never made the 3-hour drive to the Tidewater area. Brent and Becky’s Bulbs is THE place to buy bulbs in the mid-Atlantic area. Although known for daffodils, they sell spring and summer blooming bulbs as well as some perennials and grasses.

Becky provided a “living flower arrangement” workshop for the group. Living flower arrangements are spring or summer blooming bulbs that have been planted in layers in a large container. As they break dormancy and flower, they provide an array of different blooms, similar to cut flowers in a vase. Usually the containers are outside, making them ideal for porches, patios, decks, and front doorways.

Becky began the workshop by giving us each a large vinyl container with drainage holes. After adding about 4-5 inches of potting soil, we planted three lilies, Lilium orientale ‘Mona Lisa’. These are the fragrant, oriental lilies with the large star-shaped flowers. This particular cultivar was bred to be short, only 1 to 2 feet tall, with rose/pink flowers.

While she distributed the bulbs to us, she explained the plants and the planting depth. The lilies produce stem roots that act as anchors so the plants stand taller if they are planted deep, about 6-8 inches, which is why they were planted first. Becky also gave each of us a special ruler indicating how deep different bulbs should be planted.

After covering the lilies with soil, we planted one Dahlia ‘Gallery Leonardo’ and one Zantedeschia ‘Paco’ on the same level, across from each other. The Dahlia Gallery series is more compact and floriferous than other dahlias, making them ideal for containers. The dahlias grow to about 1 to 2 feet tall and the flowers have pointed petals, in apricot, peach, and salmon colors.

The Zantedeschia, also called calla lily, has a flower that looks like the peace lily houseplant. The spathe is a dark rose color and the plant grows to about 1 to 1 ½ feet tall. They look exotic but they grow well outside in this area. The bulb looked like a biscuit, it was hard to tell which end was up. Becky explained that if you cannot figure out the top and the bottom, plant the bulb sideways and it will sort itself out.

After covering with soil, we planted 10 Oxalis regnellii var. triangularis. Also known as the shamrock plant, this particular variety has burgundy-colored, triangular-shaped leaves and small pink flowers. Shamrocks grow to about 6 inches tall and prefer shade which they will get since they will be under the foliage of the other plants. These “pips” were about the size of a thumb, so it was easy to fit 10 across the container.

After covering with soil we dug a little hole in the middle and added one pink muhly grass (Muhlenbergia capillaris). This was a small plug, about 2 inches wide, which will eventually grow several feet tall. Muhly grass is an ornamental grass with blue green foliage. In the fall, the pink variety blooms, creating a beautiful pink haze in the landscape. Becky added this because she felt participants should go home with something pretty to see on top. I agree, it was the promise of great things to come.

Becky also distributed a handout with care instructions and possible combinations of the three-layered technique. We had a great time creating the living flower arrangement – it was definitely a hands on experience!

As I drove home with my container in the back seat, it occurred to me that this technique could be used many ways. Dormant bulbs can sit in a container for a while and not die.  If I take the muhly grass out (which needs water and light), I could “package” the container with tissue paper and give it as a gift. These containers could be “instant” gardens, just water and watch! And for those who may have trouble gardening, these could be great gifts –pre-made flower gardens.

When I got home I took the grass out and put it into another container. I then wrapped the large container with tissue paper I had in the house just to see how it would look. I could see the potential – giving a container with several types of bulbs could inspire others to garden or help those who have limited physical capabilities still enjoy growing flowers.

As I write this at the end of April, I have put the container outside on the deck where the temperatures are now warm enough. Already the bulbs are sending up shoots. I will post photos when they flower, but the plant links in this article to Brent and Becky’s catalog should give you an idea of the flower and additional information. Try this method of three layers of summer blooming bulbs for a beautiful container. I know I will spend the summer enjoying my living flower arrangement and the memories of a great weekend at Brent and Becky’s Bulbs.

Brent and Becky’s Bulbs is a family-owned, mail order business in operation since 1900. They have a fall planted/spring flowering catalog and a summer-flowering catalog. They have a Bulb Shoppe full of bulbs and gardening accessories surrounded by the Chesapeake Bay friendly 8-acre teaching garden. The public is welcomed to visit the Shoppe and gardens Monday through Saturday, February through mid-December. Workshop and gardening programs also are offered onsite and Brent gives lectures across the country.

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General’s Choice of Trees and Shrubs is a Wise Choice for the Mid-Atlantic Gardener

Posted on April 16, 2018 | 2 comments

 

Spring is the season for plant sales in the Washington DC area. Every weekend there are plant and garden sales, garden parties, workshops, tours, and lectures. I look forward to these annual events just as much as I look forward to seeing the cherry blossoms. One of the more interesting plant sales is Mount Vernon’s Historic Plant and Garden Sale in Virginia. This year, the month-long sale runs from Saturday April 21 to May 20, 10:00 am to 6:00 pm (members can attend the preview night on April 20). The plants are located outdoors, just outside the Mt. Vernon main gift shop, and admission tickets are not necessary. Gardening accoutrements such as tools, books, mugs, note cards, and gift items also are available. Staff horticulturists, easy to spot by their bright green shirts, are available to answer gardening questions on Wednesdays and Sundays from 1:00 to 2:00 pm.

“At length my dear Marquis I am become a private citizen on the banks of the Potomac, & under the shadow of my own Vine & my own Fig-tree.”

What sets this plant sale apart from other local sales is provenance. The Mt. Vernon horticulturists propagated most of the plants that are for sale from the plants that are grown on the George Washington’s estate. There is a wide assortment of vegetables, flowers, herbs, trees, and shrubs. Of note is the General’s Choice Collection. Staff grew ten trees and shrubs representative of those that were grown by George Washington: three types of boxwood (American, English, and tree), two edibles (pawpaw and fig), tulip poplar, southern magnolia, redbud, dogwood, and red maple. The General’s Choice Collection has distinctive tags and can be grown easily by gardeners and homeowners in the mid-Atlantic area.

In addition, the Mt. Vernon horticulturists collected, cleaned, and packaged heirloom seed from plants grown on the estate. The beautifully designed seed packets make great souvenir gifts, easy to mail. The proceeds from the plant sale support the historical museum and gardens. Every time someone purchases a plant or a seed packet, George Washington’s legacy as a gentleman farmer lives on.

“Planted all my Cedars, all my Pawpaw, and two Honey locust Trees in my Shrubberies and two of the latter in my groves – one at each ‘side’ of the House and a large Holly tree on the Point going to the Sein landing.”

Photos courtesy of George Washington’s Mt. Vernon

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Best Phlox Plants for Mid-Atlantic Gardens

Posted on April 10, 2018 | 3 comments
Lavelle phlox

Lavelle

Despite its tendency to get powdery mildew, phlox is a very common perennial in the mid-Atlantic area. Many gardeners –as well as butterflies– love the old-fashioned, native plant for its tall stems of summer-blooming pink, purple, or white flowers.  Phlox is actually a large genus comprising more than 60 species native to North America. There is wide variation — some plants are tall, low growing, or groundcovers, while some prefer full sun and others thrive in shady, woodland areas.

This year, before you purchase phlox for your garden, read about the recommended varieties in Mt. Cuba Center’s report. The horticulturists at the Trial Garden, Mt. Cuba Center, Delaware, completed a three-year study. They tested 94 selections of eight sun-loving species and 43 selections of two shade-loving species.  For the sun lovers, they deliberately tested for resistance to powdery mildew, a fungal infestation of the foliage that creates an unsightly white powder. (This usually does not kill the plant but detracts from its beauty).

Of the sun-loving plants, within the species Phlox paniculata, top performers are ‘Jeana’, ‘Glamour Girl’, ‘Delta Snow’, ‘Lavelle’, ‘Robert Poore’, ‘Dick Weaver’, ‘David’, ‘Ditomdre’ (Coral Cream Drop), ‘Shortwood’, and the hybrid P. x arendsii ‘Babyface’.

Jeana

“Jeana,” according to the report, “is, without a doubt, the best performing phlox from the trial. This cultivar was discovered growing along the Harpeth River near Nashville, Tennessee and named after its discover Jeana Prewitt.”

Interestingly, volunteers who monitored pollinator visitations in the trial garden, noticed that ‘Jeana’s’ pink flowers received 539 visits from butterflies over 2 years. Others phlox flowers received at best 117 and lower.  ‘Lavelle’, second in place, received 117 visits indicating a marked preference for ‘Jeana’.

 

Blue Moon phlox

Blue Moon

Horticulturists also trialed shade-loving woodland phlox (Phlox divaricata) and creeping phlox (Phlox stolonifera). Their report stated that the creeping phlox was easy to grow while the woodland was more difficult. However, they conceded that their initial plants of the woodland may not have been the healthiest. The best performers of woodland phlox are Phlox divaricata and P. divaricata ‘Blue Moon.’ With creeping phlox, best performers are Phlox stolonifera ‘Fran’s Purple’, ‘Home Fires’, ‘Pink Ridge’, and ‘Sherwood Purple’.

Fran's purple phlox

Fran’s Purple

All photos courtesy of Mt. Cuba Center

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