LIST OF PLANTS 181 
January and February. Cuttings for winter and spring 
crops are not much used now. 
TORENIA.—-Sow seed of the annual species and varie- 
ties in March in a temperature of 70 degrees. All kinds 
are readily increased by cuttings inserted in a close 
frame with bottom heat in spring and summer. 
TRACHELIUM (THROAT-WoRT).—Seed of this old 
favourite blue-flowering greenhouse plant should be 
sown either in September in a greenhouse or in March 
in pots of sandy soil stood on a mild hot-bed. 
TRADESCANTIA (SPIDER-woRT). — Propagate the 
popular hardy T. virginica by division in March. The 
stove and greenhouse cultivated species grow readily 
from cuttings inserted in porous compost and in moist 
heat during spring and summer. 
TRILLIUM (AMERICAN Woop Lity).—Carefully divide 
the rooting rhizomes in September, and plant in a peaty, 
moist, but well-drained soil in a shady position on the 
rockery. 
TRITELEIA (TRIPLET LiLy).—Propagate by offsets 
removed from old bulbs when potting or planting. 
Tritonta.—Increase similar to the Triteleias. 
TROLLIUS (GLOBE FLOWER).—Propagate by division 
in October or April. Seeds are slow in germinating, 
but some pretty hybrids have been raised in recent years. 
Trop#oLuM.—The annual kinds, known as Nastur- 
tiums, both dwarf and climbing, are raised from seed 
sown in April where intended to grow; double and 
special varieties by cuttings in gentle heat; tuberous- 
rooted ones by tubers and seed; and T. speciosum by 
seed and division of creeping rhizomes in October or 
March. 
Tu.ips.—The general method of propagating Tulips 
