| Picture | Plant Name | Botanical Name | Plant Description |
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| Alder-Leaf Mountain Mahogany | Cercocarpus montanus | A semi-evergreen shrub native to Western North America. Small yellow flowers turn to more conspicuous tufted seeds. The leaves are broader than other mountain mahogany species with crowded parallel veins. Very drought tolerant and will drop its leaves in extreme drought situations and then fully recover. Works great as a massed planting. |
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| Alder-Leaved Serviceberry | Amelanchier alnifolia | Suckering, deciduous shrub native to the western United States. Rounded, dark-green leaves are slightly toothed at the tips and turn yellow to red in the fall. Clusters of pure white flowers, up to 1" in diameter, bloom in late-spring followed by purple-black berries. Berries are said to resemble blueberries in both look and taste and are often used in jellies and jams. Tolerant of alkaline soils. |
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| Allegheny Serviceberry | Amelanchier laevis | Small tree or large deciduous shrub. Usually grown with multiple stems. Pure-white flowers grow in clusters in early-spring. Finely serrated, smooth leaves are purple when new then change to mid-green and then to orange-red in the fall. Prefers moist, well-drained soils but will tolerate a wide variety of conditions. |
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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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| Alpine Skullcap | Scutellaria alpina | Low-growing, spreading perennial with gray-green, toothed-leaves. Blooms during mid-summer with lavender and white flowers. Does best in full sun or partial shade with some additional watering. Great addition for rock gardens and to attract pollinators. Seed pods provide interest during late-summer and fall. |
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| Amur Maple | Acer tataricum subsp. ginnala | Small tree with irregularly shaped canopy native to parts of Asia. Usually forms multi-stemmed tree but can be single-stemmed with proper training. The tri-lobed glossy leaves emerge early and spring and turn bright red in the fall. Inconspicuous pale yellow flowers bloom in late spring followed by bright red winged seeds. |
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| Barren Strawberry | Waldsteinia ternata | Low-growing groundcover that looks similar to a strawberry. Leaves are trifoliate and medium green with serrated edges. Flowers resemble those of the strawberry but are yellow and produce inedible fruit. Spreads readily and forms an attractive green carpet. |
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| Beach Strawberry | Fragaria chiloensis | Low-growing, fruit-bearing perennial. One of the parents of the garden strawberry. Native to the Pacific Coasts of North and South America and including Hawaii. Deep green trifoliate leaves have serrated edges. Numerous runners allow the plant to spread into large clumps. Red fruit is edible. Grow in fertile, well-drained soil. Requires moderate amounts of water. |
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| Bigtooth Maple | Acer grandidentatum | Small, usually multi-stemmed tree native to the Western United States. Can be trained to grow on a single stem. Attractive fall color varying from red to yellow depending on the climate. Requires occasional deep soaking to keep healthy. Subject to winter sunscald on bark and some chlorosis. Avoid Rocky Mountain Glow variety due to inferior performance in Utah. |
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| Bitterbrush | Purshia tridentata | Native plant to western United States. Small gray-green leaves are woolly underneath. Important forage plant for deer and chipmunks. Abundant cream-yellow flowers appear in spring and summer. Tolerant of many soil types and helps with erosion control. |
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| Black Chokeberry | Aronia melanocarpa var. elata | Upright, multi-stemmed shrub native to the eastern United States. Dark-green glossy leaves turn wine-red in winter. Clusters of small white flowers bloom in May and are followed by black astringent berries. Berries are edible but are best left to wildlife but have been used to make jams and jellies. Tolerates a wide range of soil types. |
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| Black Lace Elderberry | Sambucus nigra 'Eva' | Upright multi-stemmed shrub. Finely cut, dark purple leaves resemble those of a Japanese Maple. Pinkish-white blossoms appear in early-summer turning to reddish-purple berries that can be left on the trees for wildlife or used in jellies and jams. Tolerant of a wide range of soil types and fairly easy to grow. |
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| Blue Bouquet Speedwell | Veronica spicata 'Blue Bouquet' | Clump-forming perennial with ascending, tapered spikes dark violet blossoms during early summer. Dark green leaves are lance-shaped and grow on short stems Prefers full sun and well drained soil. A great cut flower. Attracts bees and butterflies. |
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| Blue Clips Carpathian Bellflower | Campanula carpatica 'Blaue Clips' | Low-growing herbaceous perennial. Violet-blue bell shaped flowers grow profusely in mid to late-spring. Forms a mass of small dark-green leaves that stay compact and mounded. Prefers moderate amounts of water and organic soils. Use mulch to keep the soil cool. Needs adequate watering during the heat of the summer. |
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| Blue Spruce | Picea pungens | An evergreen, conical to columnar tree with horizontal, stiff branches having sharp pointed four sided, bluish gray-green needles 1/2" to 1 1/2" long, arranged radially on the shoots. Green, later pale brown female cones are 3-5" long, maturing in autumn. Prefers full sun and well drained soil. |
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| Blue Star | Amsonia tabernaemontana var. salicifolia | Clump-forming perennial native to Missouri. Forms pyramidal clusters of blue, star-shaped flowers with white throats. Thin, willow-shaped leaves grow on tall stems that may become floppy in excessive shade or soil that is too fertile. Tolerates some drought. |
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| Brass Buttons | Leptinella squalida | Low-growing, rhizomatous perennial native to New Zealand. Tight mats of fern-like leaves tolerate some foot traffic. Produces small, yellow, button-like flowers that are not considered particularly ornamental. May not be particularly tolerant of dry sunny areas. Plant in moist, shaded spaces. |
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| Butterfly Blue Pincushion Flower | Scabiosa 'Butterfly Blue' | Long-blooming, compact, clump-forming perennial. Lavender-blue flowers have discs of petals on the outside and a mound of stamen on the inside that resemble pins. Flowers are borne one per stem and will bloom almost continuously through the year until frost. Grayish-green leaves are deeply cut. |
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| Cherry Bells Spotted Bellflower | Campanula punctata f. rubriflora 'Cherry Bells' | Clump-forming, slowly-creeping perennial. Haning, bell-shaped flowers vary in color from cherry-red to dull rose with spots inside the petals. Blooms appear in late-spring to early-summer. Deeply-lobed, mid-green leaves grow on short stems arising from a basal rosette. Grow in well-drained soil with moderate amounts of water. |
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| Chokecherry | Prunus virginiana | Extremely hardy multi-stemmed tree or large shrub depending on pruning. Produces creamy white flowers in mid to late-spring. Berries are acidic and astringent but are edible and can be used in jellies. Adaptable to a wide range of soil types and watering regimes. Prefers to grow in full sun. |
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