Plant Science Terms - X-Y-Z

Xeric - plant or landscape that conserves water. Most xeric plants need minimal supplemental water after an establishment period (18 to 24 months after planting) unless there is extreme drought

Xeriscape - a landscape style that employs drought-resistant plants to help conserve water

Xylem - principal water conducting tissue of vascular plants

Yellows - type of disease, common among some flowers, that is caused by a virus or mycoplasma-tike organism. This disease causes stunting and a yellowish appearance

Yield - refers to both the measure of the yield of a crop per unit area of land cultivation, and the seed generation of the plant itself

Zone of elongation - area of the root where the cells expand


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