Tender

Only able to grow without protection in mild climatic conditions

Tendril

Twining thread-like appendage

Tepal

Subdivision of a perianth that cannot be clearly differentiated into sepal or petal

Tomentose

With dense, woolly pubescence

Tray

A seed tray (or one used for plug production) of standard dimensions

Trifoliate

Three-leafed

Trunk

The main stem of a tree

Tuber

A short, thick, usually underground, modified stem, of one year's duration, in which food reserves are stored, and which usually has buds (eyes) from which new plants are produced