Yellow Marigold

The Yellow Marigold is a dye material and a type of Plant that grows above-ground on grass in the Forest biome. It can only be harvested with a Pickaxe. Its sole purpose is to make Yellow Dye.

This and other dye materials can also be sold to an NPC as a good early-game source of coins.

The Yellow Marigold can also spawn in the NPC, Dye Trader by putting it in you hotbar and holding it.