Thuja occidentalis ( Boothii American arborvitae )

Boothii is a dwarf and spherical, flat-topped when mature. In general, this conifer is a tall columnar to conical, evergreen tree with fissured, reddish bark. Scale-like leaves are ovate, mid to dark green on top, lighter beneath. Females bear small […]

Thuja occidentalis ( Batemanii American Arborvitae )

Coniferous, evergreen tree with an open, cone-like shape and dark green needles. The branching is irregular. Foliage in winter is often brown to green. This plant enjoys good sun exposure and a moist, acidic soil. North America native. Also known […]

Thuja occidentalis ( Arborvitae )

This conifer is a tall columnar to conical, evergreen tree with fissured, reddish bark. Scale-like leaves are ovate, mid to dark-green on top, lighter beneath. Females bear small cones with a small terminal hook on each scale.

Thuja koraiensis ( Korean arborvitae )

This is a small, evergreen tree with a conical habit. It often has trailing branchlets with flat shoots. Scale-like leaves are diamond shaped on young shoots and triangular on older shoots, bright green on top and silvery underneath. They grow […]

Thrinax morrisii ( Brittle thatch palm )

Thrinax morrisii is a small palm with a slim-, upright stems. Leaves are divided halfway into 33 to 58 narrow lobes, densely white to tan-scaly underneath, then glabrous blue-green above. Produces white to yellow or orange flowers in loose-arching panicles. […]

Thrinax bahamensis ( Brittle thatch )

Thrinax bahamensis is a small palm with a slim-, upright stems. Leaves are divided halfway into 33 to 58 narrow lobes, densely white to tan-scaly underneath, then glabrous blue-green above. Produces white to yellow or orange flowers in loose-arching panicles. […]

Thlaspi macrophyllum ( Thlaspi )

Semi-evergreen perennial with scalloped leaves. Malodorous corymbs of white flowers with light green veins bloom in early spring. Flat, heart-shaped fruit follow blooms. Ideal for groundcover underneath trees and shrubs. Also referred to as Pachyphragma.

Thlaspi bulbosum ( CommonName Not Available )

Bulbosum is a tufted, tuberous-rooted perennial with rosetts of ovate to ovate-oblong or rounded, entire or toothed, glaucous, dark green leves. Produces deep purple-violet flowers with spoon-shaped petals on loose, spike-like racemens. In general, this genus of short-lived perennials also […]