Turmeric — Turmeric (Curcuma longa) is a rhizomatous herbaceous perennial plant of the ginger family, Zingiberaceae which is native to tropical South Asia. It needs temperatures between 20 and 30 deg. C. and a considerable amount of annual rainfall to thrive. Plants are gathered annually for their rhizomes, and re-seeded from some of those rhizomes in the following season. It …

Tumbleweed — Salsola (also known as Tumbleweed, Saltwort or Russian thistle) is a genus of herbs, subshrubs, shrubs and small trees in the family Amaranthaceae, native to Africa, Asia, and Europe; they typically grow on flat, often dry and/or somewhat saline soils, with some species in saltmarshes. Recent genetic studies have however shown that the genus as traditionally circumscribed is …

Tulip Tree — Liriodendron is a genus of two species of tree in the Magnoliaceae family, known under the common name Tulip tree. Liriodendron tulipifera is native to eastern North America, while Liriodendron chinense is native to China and Vietnam. Both species are large deciduous trees. Various extinct species have been described from the fossil record. The tulip tree is …

Tuberose — The tuberose (Polianthes tuberosa) is a perennial plant of the agave family Agavaceae, extracts of which are used as a top note in perfumery. The common name derives from the Latin tuberosa, meaning swollen or tuberous in reference to its root system. It consists of about 12 species. Its East Indian name is “Rajnigandha”, though it is sometimes …

Tulip — Tulipa commonly called Tulip is a genus of about 100 species of bulbous flowering plants in the family Liliaceae. The native range of the species include southern Europe, north Africa, and Asia from Anatolia and Iran in the east to northeast of China. The centre of diversity of the genus is in the Pamir and Hindu Kush mountains …

Torreya — Torreya is a genus of conifers comprising five or six species, treated in either the Cephalotaxaceae, or in the Taxaceae when that family is considered in a broad sense. Four are native to eastern Asia, the other two native to North America. They are small to medium sized evergreen trees reaching 5-20 m, rarely 25 m, tall. The …

Tomato — The tomato (Solanum lycopersicum) is a plant in the Solanaceae or nightshade family, as are its close cousins tobacco, chili peppers, potato, and eggplant. The tomato is native to Central, South, and southern North America from Mexico to Peru. It is a perennial, often grown outdoors in temperate climates as an annual, typically reaching to 1–3 m (3 …

Toadflax — Toadflax or Linaria is a genus of about 100 species of herbaceous annuals and perennials that was traditionally placed in the foxglove family Scrophulariaceae. Due to new genetic research, it has now been placed in the vastly expanded family Plantaginaceae. The genus is native to temperate regions of Europe, northern Africa and Asia, with the highest species diversity …

Thyme — Thyme (Thymus) is a genus of about 350 species of aromatic perennial herbaceous plants and sub-shrubs to 40 cm tall, in the family Lamiaceae and native to Europe, North Africa and Asia. A number of species have different chemotypes. The stems tend to be narrow or even wiry; the leaves are evergreen in most species, arranged in opposite …

Teasel — Teasel or Dipsacus is a genus of flowering plant in the family Dipsacaceae. The members of this genus are known as teasel or teazel or teazle. The genus includes about 15 species of tall herbaceous biennial plants (rarely short-lived perennial plants) growing to 1-2.5 m tall, native to Europe, Asia and northern Africa. The genus name is derived …