Gardening Glossary: T-W

A B C D E F G H I J K L M N O P R S T U V W

T

Tap Root: The main root growing vertically into the soil.

Tender: A plant that has no resistance to frost.

Tendril: A thin, long stem used for attaching to nearby branches, trellis, fences, etc.

Terminal: The flower or bud at the end of a branch or stem.

Thin: To reduce the number of seedlings or young plants to give the remainder room to grow.

Top Dressing: Applying compost or fertiliser to the soil around plants.

Topiary: Clipping shrubs, hedges, etc, into decorative shapes.

Topsoil: The usually more fertile top layer of soil – see subsoil.

Transpiration: Water loss through a plant’s pores in leaves and stems.

Tree: A woody plant usually with a clearly defined trunk with branches above.

Tuber: Like a bulb and a rhizome, this is a modified stem, or sometimes a root, that provides storage for a plant.

U

Underplanting: The practice of planting low growing plants beneath taller ones.

V

Variegated: A leaf showing a variety of colours.

Vegetative Propagation: Making new plants asexually, usually by taking cuttings or layering, etc.

Vermiculite: Expanded mica mixed with compost for cuttings to help retain water and give a good air supply.

W

Weed: This is really any plant that is growing where the gardener doesn’t want it, usually applied to naturally occurring wild plants.

Whorl: Three or more leaves, etc, arising from one place.

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