Hemp
Cannabis sativa
Hemp is originally from central Asia, and has been cultivated throughout history as a source of fiber, seed, oil, and medicine.
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Polinator
Hollyhock
Alcea rosea
Hollyhocks are old-fashioned cottage garden favorites for their height and cheerful flowers in a wide range of colors. Most require staking to support their heavy stems.
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Honeysuckle
Lonicera sempervirens
A woody, twining vine, honeysuckle needs some structure to support itself. It blooms nearly all summer and is attractive to hummingbirds and other pollinators. It is well-suited for arbors, pergolas, and fences.
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Jerusalem Artichoke
Helianthus tuberosus
Jerusalem artichoke is a perennial sunflower relative that produces a profusion of bright yellow flowers atop ten foot stalks. It is valued for its edible tubers, which resemble the flavor of water chestnuts.
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Joe Pye Weed
Eutrochium maculatum
This tall plant is crowned with purple-pink flowers in the late summer. It is an American native and tolerates a wide variety of environmental conditions. Its height and bloom time can be controlled by by pruning it back by half when it reaches about two to three feet.
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Key Lime
Citrus x aurantiifolia
Key limes are small citrus trees with highly fragrant white blossoms. They produce many delightful fruits which are excellent for cooking. In this region, they are best grown in pots so that they can be moved in and out as the temperatures dictate.
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Lamb's Ears
Stachys byzantina
This silver-leafed groundcover does best in well-drained soil, but tolerates adverse conditions. Its purple flowers are attractive to honeybees and bumblebees.
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Lantana
Lantana camara
Lantana is a colorful, shrubby annual with masses of flowers in shades of orange, yellow, and pink. Its leaves give off a distinctive smell and it produces bluish-black seeds. Lantana is commonly used as a bedding plant because of its long bloom season.
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Lemon
Citrus limon
As with the other tropicals grown at Mount Vernon, the lemons are grown in pots so that they can be moved into a greenhouse for the winter.
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Lemon Balm
Melissa officinalis
Lemon balm is a spreading herb with a strong citrusy fragrance. It can be used for teas and cooking and is frequently used for essential oil. Gardeners should be aware that it can be aggressive and should be carefully contained.
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