Botanical Name

English Name

1 Deciduous

2 Evergreen

3 Vine

4 Herbaceous

Perennial

Ultimate Height in feet

Color

Time of Bloom

Remarks

Tilia tomentosa

Pyramidal White Linden

1

30-40

T. Branches upright, forming a pyramidal, compact head. Leaves large, pale green above and white-tomentose beneath. A. D. G.

Toxylon pomiferum

Osage Orange

1

15-20

S. A small tree or shrub much used for hedges. It is somewhat thorny and bears inedible orange-like fruits. It is a gross feeder and requires rich soil. B. C.

Tradescantia virginiana

Spiderwort

4

3

Purple

June to Aug.

Leaves coarse and grass-like; flowers in showy umbels. Good in masses near water. A. F. I.

Trade scantia virginiana var. alba

White Spiderwort

4

3

White

June to Aug.

Similar to the preceding in habit of growth. A. F. I.

Trillium grandiflorum

Wood-Lily or Wake Robin

4

8-10 in.

White

May & June

A tuberous-rooted native perennial, with solitary three-petaled flowers about 3 inches across. It turns light pink as it fades. Leaves broad, light green in clusters of three on erect stems. Good among ferns, in the rockery or naturalized in masses under trees. There are many species, but the T. grandiflorum is the best. A. F. I.

Trillium cernuum

4

8-10 in.

White

April & May

Trillium erectum

Purple Trillium

4

8-10 in.

Red-brown

April to June

Trillium erectum var. album

4

8-10 in.

White

April to June

Tritoma

See Kniphofia

Tritonia crocosmaeflora or Montbretia

4

3

Orange-scarlet

July & Sept.

A useful bulbous plant with loose racemes of flowers on erect spikes. Foliage stiff and grass-like. It is not perfectly hardy, but can be grown successfully in well-drained soil if a generous mulch of leaves or litter is given in winter. Plant bulbs in May and set 4 inches deep. B. C. H. I,

Tritonia crocosmaeflora var. Rayon d'Or

4

2-3

Ochre-yellow

July & Sept.

Tritonia crocosmaeflora var. Gerbe d'Or

4

2-3

Golden yellow

July & Sept.

Tritonia crocosmaeflora var. Soleil couchant

4

2-3

Golden yellow

July & Sept.

Tritonia Pottsii

Potts' Montbretia

4

2-3

Orange

July to Oct.

Tritonia rosea

4

1

Bright red

July & Aug.

Flowers spotted with yellow.

Trollius europaeus

Globe Flower

4

1-11/2

Lemon-yellow

May to July

Foliage finely-divided and deep green. Flowers globular about 2 inches across and produced on stout, erect stems. A good border plant, excellent for cutting. A. F. 1.

Trollius europaeus var. flore-pleno

Double Globe Flower

4

1 1/2

Orange

May to July

Flowers semi-double and very large.

Trollius europaeus var. Orange Globe

4

11/2

Deep orange

May to July

The largest and most free-flowering of the variety.

Tsuga canadensis

American Hemlock

2

60-70

T. A native graceful evergreen tree with yew-like foliage; branches spreading and somewhat drooping. It is rather open in growth, but by pruning it can be made very dense. Good for hedges. It is shade-enduring, therefore excellent for screens under trees or for other undergrowth planting. B. C. D. F.

Tsuga canadensis var. pendula

Sargent's Weeping Hemlock

2

5-6

T. A flat-topped form with spreading branches and drooping branch-lets. A beautiful small tree. B. C. E. F.

Tsuga caroliniana

Carolina Hemlock

2

60-70

T. Denser in growth than T. canadensis, with heavier and darker green foliage. B. C. E. F.

Tulipa

Tulip

6-12 in.

Various

April & May

The Tulips are well-known, common garden favorites. They require a well-drained soil; and the bulbs should be planted about 4 inches deep in September or October. They are attractive in masses under shrubs, among perennials or in solid beds on the lawn, where they should be planted about 4 inches apart. After planting, a light mulch with leaves or strawy manure should be given. The varieties cultivated are too numerous to mention, but they can be obtained in all shades of white, yellow, red, pink and parti-colored, with double and single flowers. There are also early and late-flowering varieties.

Tunica saxifraga

4

6-8 in.

Pink

June & July

A pretty dwarf perennial with dense, small, dark green foliage and masses of tiny flowers along the stems. Attractive in the rockery. A. G.

Typha latifolia

Cat-tail

4

4-5

Dark brown

June & July

Attractive in marshes or shallow water. Leaves long, glossy and ribbon-like. Flowers in dense, silky spikes from 1 to 1 1/2 feet long. A. F.

Ulmaria camtschatica or Spiraea gigantea

Kamschatkan Spiraea

4

4-5

Cream-white

July

Leaves palmate and rough with irregular clusters of very showy flowers. Good among coarse perennials and near water. A. F. I.