| Picture | Plant Name | Botanical Name | Plant Description |
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| Banana Yucca | Yucca baccata | Rosette-forming evergreen shrub. Long lance-shaped gray to blue-green leaves grow from the woody base. Leaf tips are quite stiff and form a sharp spine. Creamy white pendant flowers grow on tall stalks above the plant in spring. With two or more plants the flowers will grow an edible banana-shaped fruit that was used as a food source by native Americans. Requires little or no water once established. |
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| Harriman Yucca | Yucca harrimaniae | Upright-growing evergreen shrub. Thick, narrow blue-green leaves have sharp tips and should be planted away from high traffic areas. Clusters of cream-colored flowers tinged with purple grow on tall stems above the plants in mid to late-spring. Needs no irrigation once established. |
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| Ivory Tower Yucca | Yucca flaccida 'Ivory Tower' | Slow-growing, very hardy evergreen shrub. Forms a basal rosette of long pointed leaves. Stalks of white, bell-shaped, faintly fragrant flowers bloom in mid to late summer. Will form large colonies of offshoots over time. Tolerant of a wide range of soil and water conditions. Needs no additional irrigation once established. |
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| Navajo Yucca | Yucca baileyi | Upright-growing evergreen shrub. Leaves are very narrow and pointed at tip end. Clusters of cream-colored flowers tinged with purple grow on tall stems above the plants in mid to late-spring. Needs no irrigation once established. May not be entirely winter hardy in Utah. |
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| Yaku Jima Maiden Grass | Miscanthus sinensis 'Yaku Jima' | Compact rounded ornamental grass with very narrow leaves. Not a true clone but a name used for several very similar cultivars. Very attractive fine yellow to tan inflorescenses appear in late-summer. Let stand throughout the winter to provide interest. Cut down to 4-6" above the soil in late-winter or early spring before new growth occurs. |
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| Yellow Hardy Ice Plant | Delosperma nubigenum | Creeping, mat-forming succulent native to mountainous areas of South Africa. Bright yellow daisy-like flowers appear in late-spring and last until fall. Bright-green knobby leaves turn bright red during the winter. Avoid overwatering and excessive winter moisture. Not as drought tolerant as other ice plants but still requires very little moisture. |
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| Yellow Pineleaf Penstemon | Penstemon pinifolius 'Mersea Yellow' | A rare color variant in the penstemon genus. Abundant bright yellow blooms cover the plant in mid-summer. Spreading clumps of small narrow dark green leaves make this a pleasing plant even when out of bloom. Proven to be as vigorous and drought tolerant as regular Pineleaf Penstemon. Tolerates any well-drained soil types. |
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| Yellow Trumpetvine | Campsis radicans f. flava | Vigorous woody climbing vine with dark green leaves and yellow tumpet-shaped flowers that bloom from late summer into fall. This variety is one of the hardiest and most reliable to grow in most soils. Attracts hummingbirds and some insects. Requires no additional moisture once established. |
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| Yellow Twig Dogwood | Cornus sericea 'Flaviramea' | Vigorously growing shrub with bright yellow branches and stems that are especially noticeable in winter. Tiny white flowers appear in clusters in spring giving way to white berries. Although favored by birds, the berries are mildly toxic to humans and may cause stomach aches. Tolerant of a wide range of conditions but prefers medium to moist soils. |
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| Yellowhorn | Xanthoceras sorbifolium | Small deciduous flowering tree or multi-stemmed shrub. Glossy, dark-green, compound leaves are composed of 9-17 lance-shaped leaflets. Five petaled white flowers with red or yellow centers blossom in May and turn to buckeye shaped seeds. Easily grown in a wide range of conditions. |
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| Yellowwood | Cladrastis kentukea | Medium growing deciduous tree forming a broad, rounded crown. Yellowish-green compound leaves emerge in spring, turning mid green in summer and yellow in fall. Profuse white flowers bloom in wisteria-like clusters in spring after the tree is established between 5-8 years. Wood contains a yellow dye, hence the name. |
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| Yucca | Yucca filamentosa | Broadleaf evergreen shrub. Long sword-shaped leaves grow basally and are spine-tipped and rigid. Curly, thread-like filaments develop along the leaf margins. Tall stalks growing out of the center of the plant produce clusters of large white flowers in the summer. Grows well in poor soils and tolerates drought well. |