ENCYCLOPEDIA OF GARDENING. 
America; virginiana alba, white; virginiana flore pleno, double. For indoor species 
see the genus Zebrina. 
Tragacanth Gum-plant (Astragalus tragacantha). — See 
Astragalus. 
Tragopogon (Salsafy; Vegetable Oyster).—Ord. Composite. 
Hardy biennial esculent-rooted vegetable. Roots long, tapering, white. 
CULTURE: Soil, ordinary fine, rich, deeply trenched, free from 
stones. Position, sunny, open. Sow seeds in groups of three or four, 
12 in, apart, in drills }in. deep, & 18in. apart, in April. Thin seed- 
lings when 3 in, high to one in each group. Remove flower heads as 
soon as seen. Lift the roots in Oct., twist off their leaves, & store in 
layers with sand or soil between in cellar or outhouse until required 
for cooking. Artificial manures for: 241b, kainit, 11b. sulphate of 
ammonia, 21 1b. of guano, mixed, per square rod (304 square yards , 
applied between sowing in spring. Requires to be raised from seed 
annually for producing roots for culinary purposes. See Scorzonera 
for market culture, etc. 
aoe CULTIVATED: TT. porrifolius, purple, May and June, 2 to 3 ft., 
T . 
Trailing Fuchsia (Fuchsia procumbens).—See Fuchsia. 
Trapa (Water Caltrops; Water Chestnut; Jesuit’s Nut).—Ord. 
Onagracee. Hardy aquatic floating herbs. 
CULTURE: Soil, rich loamy. Position, sunny; shallow pots or tubs 
in cool greenhouse. Plant, April or May. Propagate by seeds sown 
in loamy soil in water in temp. of 65° to 75° in spring. 
SPECIES CULTIVATED: T. natans (Syn. T. bicornis), Europe. 
Traveller’s Joy (Clematis vitalba).—See Clematis. 
Traveller’s Tree (Ravenala madagascarensis).—See Ravenala. 
Treasure-flower (Gazania Pavonia).—See Gazania. 
Tree Carnation.—Ssce Dianthus. 
Tree Celandine (Bocconia cordata).—See Bocconia. 
Tree Cinquefoil (Potentilla frutescens).—See Potentilla. 
Tree Ferns.—See Cyathea & Dicksonia. 
Tree Heath (Erica arborea).—See Erica. 
Tree Lupin (Lupinus arboreus)—See Lupinus. 
Tree Mallow (Lavatera aborea).—See Lavatera. 
Tree Mignonette.—See Reseda. 
Tree-of-Heaven (Ailanthus glandulosus)—See Ailanthus. 
Tree Onion (Allium cepa proliterum).—See Allium. 
Tree Pzeony (Pxonia moutan).—See Pzonia. 
Tree Poppy (Romneya Coulteri)—See Romneya. 
Tree Rhododendron (Rhododendron arboreum). — See 
Rhododendron. 
Tree Tomato (Cyphomandra betacea).—See Cyphomandra. 
Tremandra.—oOrd. Tremandrex. Greenhouse evergreen flowcr- 
ing shrub. 
CULTURE: Compost, two parts fibrous peat, one part turfy loam, 
one part equal proportions charcoal, broken pots & silver sand. Posi- 
tion, well-drained pots in light airy greenhouse. Pot, Feb. or March. 
Water moderately at all seasons; rain water only to be used. Shade 
from sun, June to Sept. Temp., Oct. to April 40° to 50°; April to Oct. 
50° to 65°. Propagate by cuttings of side shoots inserted in sand under 
bell-glass in shade in temp. of 55° to 65° in summer. 
SPECIES CULTIVATED: T. stelligera, purple, summer, 2 ft., Australia. 
Trembling-fern (Ptcris tremula).—See Ptcris. 
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