Njerinjil is a tap rooted herbaceous perennial plant that grows as a summer annual in colder climates.A mat-forming summer annual, with 1 1/2-5 foot long stems radiating out in all directions from the root crown. Stems are green to orange-brown, with leaves arranged opposite each other on the stem. Each leaf consists of four to eight pairs of oval-shaped leaflets, also arranged opposite each other on the leaf stalk. Leaflets typically measure 1/2 inch long and 3/16 inch wide.