Uncinia rubra ( Hook Sedge )

This is an everygreen perennial with loosely tufted or short rhizomes. Produces rigid, erect, 3-angled stems that bear flat or inrolled, sharply pointed, shiny, greenish-red to rich reddish-brown leaves. Dark brown to black flowers are produced in narrow spikes. In […]

Uncarina ( Uncarina )

This heat resistant plant does best when grown in part shade to full sun. Originating in Madagascar, the deciduous shrub may sometimes be considered a small tree as it grows to 25 feet tall. Leaves are oval and green and […]

Ulmus rubra ( Gras Elm )

Ulmus rubra is a medium-tall native elm, growing 40 to 60 feet tall. Growth habit is somewhat vase-shaped. This species can become a weed, taking over vacant ground, unmaintained sites. Prefers rich, moist, soil, but adaptable to dry, limey soils […]

Ulmus procera ( English Elm )

Ulmus procera is a large elm, with an umbrella shape, densely branching, and bark that is finely fissured, dark brown. This is another elm that has been ravaged by Dutch Elm Disease. Some believe that this is not truly a […]

Ulmus hollandica ( Dutch Elm )

Ulmus x hollandica is a group of trees resulting from the hybridization of U. carpinifolia and U. glabra. The classification of this group is somewhat confused. Not very useful as an American landscape tree. All are susceptible to Dutch elm […]

Ulmus glabra ( Camperdown Elm )

The cultivar ‘Camperdownii’ is a deciduous tree which is grown for its graceful, weeping growth habit and its attractive foliage. It has twisted branches and dark matte-green, alternate, toothed leaves to 8 inches long which turn yellow in the fall. […]

Ulmus americana ( American Elm )

The cultivar ‘Columnaris’ has a wide columnar form with branches growing to the ground and is about 3 times high as wide. This deciduous tree is cultivated for its graceful, vase-shaped growth habit with pendant branch tips and attractive foliage. […]

Ulex gallii ( Dwarf Gorse )

Gallii, also known as Dwarf gorse, is a spreading shrub with spine-tipped green shoots and rigid leaves. These small, evergreen shrubs have short, spine-like needles or spines and are grown for their yellow, pea-like, year-round flowers. Nice when grown as […]

Ulex ( Gorse )

These small, evergreen shrubs have short, spine-like needles or spines and are grown for their yellow, pea-like, year-round flowers. Nice when grown as a low hedge or can be used in the informal border. Best when grown in poor, rocky, […]

Uebelmannia buiningii ( Uebelmannia )

Buiningii is a species of Uebelmannia cactus. It is spherical and sometimes elongated with greenish red-brown to deep chocolate bodies covered with very small waxy scales. This cactus prefers moist, humid conditions and when grown as a houseplant, loves to […]