Clump of weeds are a crafting material in New Horizons. It is obtained by picking up weeds that grow naturally on the ground on islands. Digging up the weeds with a shovel will also produce the item. Unlike in previous games, where weeds would simply vanish when picked, weeds are an item than can be stored and sold at the store.
Weeds are a component in several kinds of furniture such as the Hay bed and Terrarium as well as in the crafting of Medicine.