HARDY PERENNIALS AND ROCK-PLANTS 
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THYMUS serpyllum citriodorus. ★ Lemon-scented Thyme. Each 
Mats of fragrant foliage with myriads of small, reddish pink 
flowers. 9-12 in.$0 30 
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serpyllum coccineus. ★ Crimson Thyme. A pretty, low 
creeper with crimson flowers and bronzy foliage. 4 in. 
TIARELLA cordifolia. Foamflower. A beautiful ground-cover 
under trees or in the woods. In early spring it is covered 
with little green spires of fuzzy, white bloom. 8-10 in. 
TRADESCANTIA virginiana. Three-petaled, rich purple 
flowers that naturalize easily and make a spot of strong and 
brilliant color in the wild garden. 1-3 ft. June, July. 
virginiana alba. A lovely white variety of the above. 
virginiana, Bartram. Originally from Bartram’s Gardens. 
Tall, upright-growing, with lavender flowers that remain 
open all day. The finest Tradescantia. 2-3 ft. July, August. 
TRITOMA Hybrids. Torchlilies. Great blazing rockets of sul¬ 
phur and fiery orange. 3-4 ft. June-October. 
TROLLIUS europaeus Hybrids. Globeflower. Waxy globes of 
vivid orange and brilliant yellow. ft. April-June. 
TUNICA saxifraga. ★ Resembles a delicate pink Gypsophila. 
Fine, hairlike foliage forming large green mats above which 
small flowers float like a pink mist. 1 ft. July. 
TUSSILAGO alpina. Compact dark pink flower-heads followed 
by leaves 2 feet in diameter. See illustration, page 24. 
VALERIANA officinalis. Garden Heliotrope. Tall stalks of 
Heliotrope-scented flowers. 3-4 ft. July, August. 
officinalis alba. Panicles of soft white flowers and glossy, 
green leaves. 2-3 ft. July—September. 
officinalis coccinea. A beautiful rose-coral form of the fore¬ 
going. Rare shade among flowers. 2-3 ft. July-September. 
officinalis rubra. See Gentranthus ruber. 
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VERBENA canadensis. A trailing plant covered with typical 
Verbena flowers of a pure lavender. Blooms all summer and 
likes to scramble down over a hot, dry bank. 1 - 13 ^ ft. 
VERONICA allioni. ★ The smallest, earliest, and bluest of all 
the Veronicas. 4 in. Early May. 
corymbosa stricta. ★ Dense plumes of azure-blue flowers set 
in a mat of good glossy green foliage. 6 in. 
incana. Gray foliage and slender spikes of light violet-blue 
flowers from June to August. 1 ft. 
maritima. The tallest blue Veronica. Slender spikes of deep 
periwinkle-blue on stiff stems. 2—3 ft. August, September. . 
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