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

The most pleasant foliar fragrance my nose has encountered was that of green cardamom (Elettaria cardamomum), a relative of ginger. — Joshua Siskin, Oc Register, 28 Aug. 2026

Kidd suggests making a foliar spray by dissolving 1-2 tablespoons of epsom salts per gallon of water, then spraying it on the plants every four to six weeks. — Heather Bien, The Spruce, 22 Aug. 2026

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

Word History

Etymology

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

First Known Use

circa 1859, in the meaning defined above