| Picture | Plant Name | Botanical Name | Plant Description |
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| Alpine Baby's Breath | Gypsophila petraea | An alpine perennial with masses of small white flowers on upright stems. Abundant dark green clumps of narrow foliage are a nice addition to any rock garden. Availability of this variety is not as great as other species. Needs excellent drainage and consistent watering. |
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| Birch Double Geranium | Geranium himalayense 'Plenum' | Clump forming perennial with mid-green leaves. Purplish-pink flowers are double with shades of blue and resemble tiny roses. Attractive, finely cut leaves are deeply veined. May not be as vigorous as the species. Somewhat tolerant of drought and poor soils but prefers regular water and fertile soils. |
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| Bloody Cranesbill | Geranium sanguineum | Low-growing, compact, clump-forming perennial. Dark green leaves are deeply toothed and smaller than other geraniums. Rose-pink to purple flowers mainly bloom in spring but reappear to a lesser degree throughout the year. Will tolerate some drought. Prune to keep it to a desirable size. |
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| Burgundy Blanketflower | Gaillardia x grandiflora 'Burgunder' | Bushy, often short lived perennial with gray to mid green leaves. Bears deep wine-red, daisy-shaped flowerheads 3-5" across, having frilly centers of gold and reddish brown. Prefers full sun and well drained soils. Not as drought tolerant as other blanket flower species. |
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| Colorado Gold Gazania | Gazania linearis 'Colorado Gold' | Low-growing perennial with linear leaves growing from a basal rosette. Leaves are dark green on top and silvery-gray underneath. Bright yellow daisy-like flowers appear in late spring and early summer. Mass plantings can create a groundcover. May be invasive if allowed to spread into the lawn. |
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| Crawling Baby's Breath | Gypsophila cerastioides | Low growing Himalayan native perennial with masses of small white flowers on upright stems. Abundant dark green clumps of narrow foliage are a nice addition to any rock garden. Availability of this variety is not as great as other species. Needs excellent drainage. |
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| Creeping Baby's Breath | Gypsophila repens | Low growing perennial with masses of small white flowers on upright stems. Abundant gray-green clumps of narrow foliage are a nice addition to any rock garden. Availability of this variety is not as great as other species. Needs excellent drainage. |
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| Crimson Butterflies Gaura | Gaura lindheimeri 'Crimson Butterflies' | Upright growing clump-forming perennial. Hot pink 4-petaled flowers begin blooming in spring and continue throughout the summer. Narrow, lance-shaped leaves emerge with crimson colorings in the spring turning more green in the summer. Prefers to grow in full sun. Shade and excessively rich soils will cause the plant to flop. Will tolerate some drought. |
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| Dazzler Blanketflower | Gaillardia x grandiflora 'Dazzler' | Clump-forming perrennial with large red-centered flowers with bright golden-yellow edges. Flowers bloom most profusely in the spring but continues to flower sporadically into the fall. Ornamental puff ball seed heads can be left on or removed to promote more blooming. Outstanding variety of blanketflower. |
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| Dusky Cranesbill | Geranium phaeum | Tall, clump-forming herbaceous perennial that performs best in part to full-shade and rich soils. Five-petaled, rich purple flowers bloom profusely in the spring and continue more sporadically into the summer. Dark-green leaves are deeply lobed and veined with maroon colorings at its base. |
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| Dwarf Globe Daisy | Globularia cordifolia | Dwarf, evergreen perennial native to southern and central Europe. Forms a dense mat of spoon-shaped, glossy leaves. Stems root where they touch the ground. Spherical lavender-blue flowers appear in summer and give the plant its name. Very hardy plant, tolerant of harsh areas and a great choice for rock gardens. |
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| Emerald Cascade Honeylocust | Gleditsia triacanthos 'Emerald Cascade' | Weeping form of the deciduous tree species. Although the species has thorns and large pods, this variety has no thorns and does not usually produce pods. The leaves are fernlike and composed of numerous leaflets making fall clean-up easy. The dark-green rounded leaflets have serrated edges and will turn butter-yellow in autumn. Flowers are yellow and insignificant. Very tolerant of dry and compacted soils as well as periods of drought and excess moisture. Provides light shade. |
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| Fairmount Ginkgo | Ginkgo biloba 'Fairmount' | Tall, columnar deciduous tree. Characteristic fan-shaped leaves turn bright yellow in the fall but last only briefly. Spring brings insignificant green flowers with a pleasant fragrance. This male cultivar does not set fruit. Very tolerant of urban areas and adapt well to pollution and compacted soils. A good choice for any landscape. Could be used more often. |
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| Fanfare Blanketflower | Gaillardia x grandiflora 'Fanfare' | Large-flowered trumpet-petaled variety of blanketflower. Red centered flowers with bright red petals turning to yellow at the edges adorn this plant from spring to fall. Ornamental puff ball seed heads can be left on or removed to promote more blooming. Outstanding variety of blanketflower. |
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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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| Gambel Oak | Quercus gambelii | Small deciduous tree native to the western United States. 2-5" long lobed leaves are dark green on top with pale and hairy undersides. Inconspicuous green flowers give way to acorns. Acorns are edible when properly prepared to remove the tannins. Grows in dense stands and clumps. |
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| Garden Hyacinth | Hyacinthus orientalis | Spring flowering bulb that produces spikes of very fragrant tubular flowers. Colors range from white to pink and purple. Slender green leaves grow basally. Plant in the fall. Remove spent flowers to reduce the amount of energy spent on seed production. |
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| Garden Sage | Salvia officinalis | A semi-evergreen perennial with gray-green, aromatic leaves. Bears lilac-blue flowers in early to mid-summer. Grows best in full sun, but will handle very light, dappled shade. Great addition to an herb garden or any landscape. Very popular culinary herb. |
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| Gardenview Scarlet Bee Balm | Monarda 'Gardenview Scarlet' | A member of the mint family that grows in dense clusters along spring banks. Beautiful bright red flowers appear from July to late August. Can be used for medicinal purposed and very attractive to hummingbirds and bees. This variety is mildew resistant and larger flowers. |
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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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