foliar

adjective

fo·​li·​ar ˈfō-lē-ər 

: of, relating to, or applied to leaves

foliar sprays

foliar diseases

Examples of foliar in a Sentence

Recent Examples on the Web

To make a foliar spray with baking soda, mix 1½ tablespoons of baking soda and 3 tablespoons of organic horticultural oil or vegetable oil in a gallon of water. — Lauren Landers, Better Homes & Gardens, 21 July 2026

Water wisely in the morning so annual foliage dries quickly to reduce the risk of foliar diseases. — Mary Marlowe Leverette, Southern Living, 13 July 2026

One of the most popular ways to use banana peels is to brew old peels in water to make a mild liquid fertilizer or foliar spray. — Lauren Landers, The Spruce, 20 June 2026

How to Apply Epsom Salt to Your Plants Epsom salt can be applied as a soil drench (watered into the soil) or as a foliar spray (leaf spray). — Sj McShane, Martha Stewart, 13 May 2026

Word History

Etymology

French foliaire, from Latin folium leaf + French -aire -ar

First Known Use

circa 1859, in the meaning defined above