Tree Thuja plicata 'Elegantissima' [Elegant Giant Arborvitae] One of the best plants for screening when grown in wet, but not saturated soils. An important timber tree in the western US. Subject to several pests (especially bagworms), all of which usually can be controlled with timely spraying.
Herbaceous Tiarella wherryi [Foamflower] Tiarella wherryi is a clump forming herbaceous perennial that grows about half a foot tall and can spread up to 20 inches. The white flowers reach hights of up to 20 inches. The leaves are green and lobe shaped. Tiarella wherryi does prefer moist soils but does not like wet feet, so plant accordingly. Tiarella wherryi aslo does not tolerate full sun.
Tree Indiana Native Tsuga canadensis [Canadian Hemlock] One of the finest plants for evergreen hedges; even the faster growing forms can be kept to 4-8' tall without difficulty. Dwarf forms are excellent rock garden or border specimens. Foliage browns in dry soil, drying wind, and winter sun in very exposed sites. Does not tolerate long periods of drought. Can be scorched by full sun and temperatures above 95 degrees F. Many minor pest problems, with wooly aldelgids being especially serious in the…
Shrub Tsuga canadensis 'Gentsch White' [White Dwarf Canadian Hemlock] 'Gentsch White' is a dwarf cultivar with white and silver-tipped branches. Foliage browns in dry soil, drying wind, and winter sun in very exposed sites. Does not tolerate long periods of drought. Can be scorched by full sun and temperatures above 95 degrees F. Many minor pest problems, with wooly aldelgids being especially serious in the Northeast US.
Shrub Tsuga canadensis 'Jeddeloh' [Dwarf Canadian Hemlock] The Jeddeloh Canadian Hemlock is an interesting, mounded, dwarf cultivar that forms a cascade of weeping branches. Adaptable plant, tolerant of both shade and alkaline soils. Foliage browns in dry soil, drying wind, and winter sun in very exposed sites. Does not tolerate long periods of drought. Can be scorched by full sun and temperatures above 95 degrees F. Many minor pest problems, with wooly aldelgids being especially serious in the Northeast US.
Shrub Tsuga canadensis 'Jervis' [Dwarf Canadian Hemlock] 'Jervis' is a dense, compact, dwarf cultivar with an irregularly pyramidal form. Foliage browns in dry soil, drying wind, and winter sun in very exposed sites. Does not tolerate long periods of drought. Can be scorched by full sun and temperatures above 95 degrees F. Many minor pest problems, with wooly aldelgids being especially serious in the Northeast US.
Tree Tsuga caroliniana [Carolina Hemlock] Slower growth than Tsuga canadensis and less variable in size and form. Performs better under city conditions than T. canadensis. Still, like T. canadensis, foliage browns in dry soil, drying wind, and winter sun in very exposed sites, and it does not tolerate long periods of drought. Can be scorched by full sun and temperatures above 95 degrees F. Many different kinds of minor pest problems.
Tree Ulmus americana 'Jefferson' [Jefferson Elm] 'Jefferson' is a cultivar with ovate-elliptic dark green leaves that are asymetrical at the base and are toothed at its margins.
Tree Ulmus × 'Morton Glossy' [sold as Triumph™] [Triumph Elm] Upright oval to vase-shaped habit with arching branches, glossy dark green summer foliage, changing to yellow in fall; hybrid between Accolade® and Vanguard™. Dutch elm disease resistant, the best habit in early age of the Morton Arboretum elms.
Tree Ulmus sp. [Elm] The Elm genus, Ulmus, contains about thirty species of mostly deciduous trees. Generally susceptible to Dutch Elm Disease, which is caused by Ophiostoma ulmi. (Dutch Elm Disease has lead to the near extinction of the American Elm in the US).
