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Tall fescue - a
coarse, clump-forming turfgrass that tolerates low fertility, heavy
wear, heat and drought and has good insect and disease tolerance. Young
seedlings are not cold tolerant, but mature plants survive most Ohio
winters.
Taproot - a stout,
tapering primary root that has limited side branching or fine roots.
Temperate -
moderate; the zones between the tropics and the polar regions of the
earth.
Tendril - a slender,
coiling modified leaf or leaf part. These help plants climb.
Tepee - a tripod of
stakes used to support climbing plants.
Terminal bud -
large, vigorous buds at the tips of stems.
Terrace - a series
of flat platforms of soil on the side of a hill, rising one above the
other.
Thatch - an
intertwined layer of dead and living roots, stems and blades of grass
plants. It holds water, pesticides and fertilizer like a sponge,
preventing them from reaching the roots.
Thorax - the middle
of the three major divisions of the arthropod body.
Topiary - training,
cutting and trimming of plants into ornamental shapes.
Topsoil - uppermost
layer of soil, usually darker and richer than the subsoil.
Toxicity - intensity
of a poison.
Transpiration - the
loss of water from plant tissues in the form of vapor.
Transplanting -
digging up a growing plant from one location to plant it in another
location.
Trellis - a frame of
latticework used as a support for climbing plants.
Tropical - regions
of the earth lying between the Tropic of Cancer and the Tropic of
Capricorn extending around the equator where the temperature and
humidity are high.
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Trunk - the main
stem of a tree, shrub or vine.
Tuber - an enlarged,
underground stem that stores food.
Turgid - the
condition of a cell, tissue or plant when it is filled with water so
that it is firm; not wilted.
Understock - the
part of a plant to which a graft is attached.
Variegated - plant
parts having different pigments resulting in more than one distinct
color or shade on the foliage.
Variety - a
subdivision of a species; occurs through natural hybridization.
Vascular system -
the tissue in a plant that moves fluids through the plant.
Vector - an organism
that transmits a disease-causing pathogen.
Vegetable - A plant cultivated for an edible part
Vegetative -
plant parts and processes concerning growth and nutrition and not reproduction.
Venation - the
pattern of veins.
Viable - capable of
growing or developing.
Virus - a group of
submicroscopic infective agents that are considered nonliving complex
molecules.
Warm-season crops -
crops that are harmed by frost and do not grow well until the
temperatures are in the 70s.
Whip - a very young
tree that still has a flexible trunk.
Wide-row planting -
growing the smaller vegetable crops in a space up to 3 feet across to
better utilize space while reducing weeding.
Wilting point - the
amount of water in a soil when a plant cannot obtain enough water to
remain turgid.
Witches'-broom - a
dense, bushy growth of branches and foliage caused by a parasitic fungus
and mites or poor pruning techniques.
Xylem - the part of
the vascular system that moves water and minerals through the plant.
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