| Picture | Plant Name | Botanical Name | Plant Description |
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| Alaska Shasta Daisy | Leucanthemum x superbum 'Alaska' | Clump-forming perennial. Produces large, single, pure white flowers up to 3" in diameter with yellow centers in late-summer to autumn. Leaves are dark green, glossy, lance-shapeds are toothed. Plant in well-drained soils. Tolerates some drought but prefers moderate amounts of water. |
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| Blue Flax | Linum perenne subsp. lewisii | Named after Lewis of the Lewis & Clark Expedition who discovered it in North American prairies. Upright perennial with fine green leaves growing in hardy clumps. Amazing bright blue blooms come in spring and disappear by June. |
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| Casa Blanca Oriental Lily | Lilium 'Casa Blanca' | Upright growing perennial with lance-shaped leaves growing along the entire length of the stem. Large white flowers with recurved petals bloom in the late-spring. Makes an excellent cut flower. |
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| Cherokee Sweet Gum | Liquidambar styraciflua 'Ward' | Medium to large deciduous tree. This variety is virtually seedless with a prominent central leader. Leaves are distinctly lobed and turn a deep burgundy in the fall. This species is somewhat intolerant of alkaline soils and may struggle while getting established. Requires regular amounts of water to maintain health. |
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| Dropmore Scarlet Honeysuckle | Lonicera × brownii 'Dropmore Scarlet' | Vigorously-growing semi-evergreen climbing vine. Leaves are rounded and often grow around the stem. Tubular red flowers are not very fragrant but attractive to hummingbirds. Twine stems around supports to help the plant grow upwards. Can handle severe pruning if overly vigorous. |
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| Floristan Violett Gayfeather | Liatris spicata 'Floristan Violett' | Upright clump-forming perennial that is attractive to bees and butterflies. Spikes of violet-purple flowers appear in the summer opening from the top downwards. Multiple stalks arise from basal tufts of narrow leaves. Will tolerate some drought and poor soils but prefers moderate amounts of water in fertile soils. Requires full sun. Makes excellent cut flowers. |
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| Gallery Blue Lupine | Lupinus 'Gallery Blue' | Upright perennial with medium green, palmately-compound leaves. Bears beautiful spikes of blue and white pea-like flowers in early summer. Grows in full sun to part shade with regular to moderate waterings. |
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| Gayfeather | Liatris spicata | Upright clump-forming perennial that is attractive to bees and butterflies. Spikes of pink-purple flowers appear in the summer opening from the top downwards. Multiple stalks arise from basal tufts of narrow leaves. Will tolerate some drought and poor soils but prefers moderate amounts of water in fertile soils. Requires full sun. Makes excellent cut flowers. |
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| Goldflame Honeysuckle | Lonicera x heckrottii | Deciduous woody twining vine. Brilliant orange to dark pink tubular flowers with bright yellow throats are extremely fragrant. Blooms appear in summer and continue into early fall. Red inedible flowers sometimes follow the blooms. Blue green leaves also provide considerable interest. Can be trained as a vine or allowed to grow as a shrub. |
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| Granny's Bouquet Lavender | Lavandula angustifolia 'Granny's Bouquet' | Low-growing and mounded sub-shrub. Gray-green aromatic foliage is quite slender and semi-evergreen. Bright blue flowers are born on tall stems in the summer. Tolerant of drought and poor soils. Overgrown plants can be severely pruned in early-spring. Winter pruning should be avoided. |
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| Great Basin Wild Rye | Leymus cinereus | Large ornamental bunch grass native to much of North America especially the Great Basin. Foliage grows green to blue-green and begins to turn dormant in late-summer. Spiked seed head grow on tall stems above the clump. Tolerates a wide range of soil and water conditions. |
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| Hidcote Blue Lavender | Lavandula angustifolia 'Hidcote' | Dense, bushy, low-growing shrub. Native to the mediterranean region of southern Europe. Linear gray-green leaves are very fragrant, especially when bruised. Fragrant bluish purple flowers are formed on tall stalks above the plant. Lavender is used herbally and medicinally for various purposes. Requires well-drained soils and is very drought tolerant. |
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| Kobold Gayfeather | Liatris spicata 'Kobold' | Upright clump-forming perennial that is attractive to bees and butterflies. Spikes of deep purple flowers appear in the summer opening from the top downwards. Multiple stalks arise from basal tufts of narrow leaves. Will tolerate some drought and poor soils but prefers moderate amounts of water in fertile soils. Requires full sun. Makes excellent cut flowers. |
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| La Sévillana Rose | Rosa 'Meigekanu' | Vigorously growing landscape shrub rose. Brilliant red double flowers, 3 inches in diameter, bloom continuously through the summer followed by scarlet rose hips. Glossy dark-green foliage is very attractive. Exhibits good pest and disease resistance. Can be planted in masses or as hedges. Very care-free. |
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| Lacy Buckwheat | Eriogonum corymbosum | Summer-blooming shrubby perennial. Woody stems turn red in the autumn. White flowers grow on corymbs throughout the summer. Grows naturally in rocky areas so prefers sandy/gravely soils and will tolerate poor soils. Does not respond well to overwatering. |
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| Lady Baltimore Mallow | Hibiscus moscheutos 'Lady Baltimore' | Vigorous, compact herbaceous perennial. Bright pink-white flowers with dark pink eyes bloom through the summer months. Dark green, deeply lobed leaves also provide a beautiful contrast to the flowers. Performs well in the heat but dislikes extremes in soil moisture. Does best in fertile soils but will tolerate different soil types. |
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| Lavance Purple Lavender | Lavandula angustifolia 'Lavance Purple' | Low-growing evergreen shrub with aromatic foliage and flowers. Linear gray-green leaves remain on the shrub year round. Deep blue to purple flowers bloom throughout the summer. This variety is shorter than the species. Pruning is best done in early spring. |
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| Lavender | Lavandula angustifolia | Great multi-use plant used as herb for oils, fragrance, and décor, but also very aesthetic in the landscape. A compact, bushy shrub with gray-green leaves. The fragrant, deep purple to blue blossoms form on long stalks up to 3 in. long, in late spring to early summer. Can be cun down each year in the spring to control size. Prefers full sun, but will handle some shade. |
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| Lavenderleaf Sundrops | Calylophus lavandulifolius | Clump-forming perennial native to Utah. Related to evening-primroses as is evident by its large, yellow, four-petaled flowers. Flowers bloom during the late-spring through the summer. Requires full sun and tolerates a variety of soils. Establishes quickly and spreads. |
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| Leadplant | Amorpha canescens | A perennial shrub with leaves and stems covered in gray-white hairs. Produces small pea-like, dark violet-purple flowers to 1/4 in. long, with orange anthers and having only one petal. Blooms in late summer and thrives in dry, poor soils and full sun. |
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