This section is from the book "A Dictionary Of Modern Gardening", by George William Johnson, David Landreth. Also available from Amazon: The Winter Harvest Handbook: Year Round Vegetable Production Using Deep Organic Techniques and Unheated Greenhouses.
Twenty-seven species. Chiefly stove and hardy herbaceous perennials. A few hardy annuals, and stove and green-house evergreen trailers. T. paniculata is a greenhouse biennial. T. tuberosa is a stove tuberous-rooted perennial. Division. The annuals, seeds. Rich light soil suits them all.
Hard v deciduous shrubs. Layers. Peat and sandy loam.
See Animal Matters.
Four species. Aquatic plants. Green-house, stove, and hardy annuals and biennials. Seeds. Rich loamy soil, in water.
Trevirania pulchella. Stove herbaceous perennial. Division. Light rich soil.
Two species. Greenhouse evergreen shrubs. Young cuttings. Sandy loam and peat.
Trewia nudiflora. Stove evergreen shrub. Cuttings. Sandy loam and peat.
Eight species. Greenhouse and hardy trailing annuals or stove evergreen trailers; the annuals increase by seeds, and common soil will suit them; the evergreens increase by cuttings or seeds, and grow best in loam and peat.
Three species. Greenhouse evergreen shrubs. Young cuttings. Sandy peat.
Trichocladus crinitus. Greenhouse evergreen shrub. Young cuttings. Sandy loam and peat.
Two species. Ferns. Hardy and stove herbaceous perennials. Division or seeds. Loam and peat.
Sixteen species. Green-house, hardy and half-hardy bulbous perennials. Offsets. Sandy loam and peat.
Trichopetalum gracile. Half-hardy herbaceous perennial. Division. Light rich soil.
Two species. Hardy annuals. Seeds. Common soil.
Three species. Greenhouse herbaceous perennials, except T. simplex, a green-house biennial increased by seeds, the other two by division; a light rich soil suits them all.
Seven species. Stove evergreen shrubs. Cuttings. Sandy loam and brick rubbish.
Two species. Hardy herbaceous perennials. Division or seeds. Light rich soil.
Trefoil or Clover. One hundred and two species. All hardy, chiefly annuals, some herbaceous perennials, and a few deciduous, herbaceous, and annual trailers. Division or seeds. Common soil.
Four species. Stove orchids. Division. Fibrous peat.
Triguera ambrosiaca. Hardy annual. Seeds. Common soil.
Fifteen species. Hardy tuberous-rooted perennials. Division or seeds. Peaty soil.
M. F. Otto observes, that - " Seven species are cultivated in our gardens, namely: Trillium sessile; T. erythro-carpum; T.pusilium,- T. cernuum; T. erectum; T. pendulum; and T. grandi-florum. Their cultivation is very simple. They grow freely in the open air without covering, in shady places, and in a mixture composed of marsh or heath soil, mixed with river sand. They bloom abundantly every year, in April and May, and are a great ornament to our gardens; the tuberous roots spread rapidly by the formation of lateral eyes, so that after some years, if the plants have not been removed, they will form large handsome bushes. The seeds ripen in August, and if sown immediately, they will come up the following year. They may be sown either in the open ground, in a shady peat border, or in pots. The stronger seedlings will bloom in the third season." - Gard. Chron.