Thin projection of the stem that wraps around supports, allowing the plant to rise, tendrils can be spiral, as in the passion flowers, or bifurcated; hanging organ originated by modification of leaves and with which vines attach to other plants and support structures.
Terrarium
Closed glass recipient used to internally stabilize temperature and humidity and, therefore, favor the culture of certain plants.
Tie
String or tape to tie a plant, usually to a stake that trains it.
Trainer
Stalk to which a plant is tied to prevent the prostration of its stem.
Transpiration
Natural and continuous loss of water from the leaves. It can be intense or insignificant, depending on the hour of the day and season of the year. Intense transpiration in warm day can lead the plant to wilt, damaging the plant.
Tree
Plant with a woody stem with a clearly perceptible trunk, topped by branches.
Treetop
The upper branches of a tree. The uppermost layer in a forest, formed by the treetops of several trees is referred to as canopy. (Also see Crown)
Trellis
Artificial structure formed by latticework, usually diagonal, used traditionally for protection and shade, in inner or exterior spaces, the walls of a bower, etc.
Tritoma
Tubercle
Thick and fleshy stem or root that acts as a storage organ. Some plants with tuberous roots can lose their leaves and stem in autumn, as the tubercle stores nourishment for new growth during the next spring. Example. Begonia tuberosa. Sometimes tubercles are produced in stalks. The tubercle is a globular structure provided with a reserve of nutrients; the potato is a typical tubercle, but not all tubercles are subterranean. (Compare Bulb, Corm, and Rhizome).
Tubular
In the shape of a tube.
Tuft
Hedge or other plant structures characterized by several long structures.
Tulip
Received it name because it is similar to a Turkish turban.
Turf
Substance with the consistency of a filamentous sponge and resulting from the decomposition of sphagnum, other mosses and similar plants. (Also see Sphagnum).
Twining
Plant, specifically the stem, tends to spiral around stalks that serve as support.
Hybrid: Plant derived from two genetically different parents. Crossed pollination is common among plants of different species within the same genus. Plants that originate from such crosses are called primary hybrids and generally possess some of the characteristics of both parents, but can be more similar to one than the other. Crossed pollination is also possible, although rare, among plants of different genera, as Fatshedera, a hybrid between Fatsia with Hedera. These crosses are called bigeneric or intergeneric hybrids. Several naturally generated hybrids are sterile.