Wildwood Flowers grow (and regrow since R17) on Wildwood Leaves and Dark Wildwood Leaves on Wildwood-trees in Jungle-biomes. There are two slightly different looking kinds of Wildwood flowers (a glowing kind with protruding orange blossoms, and a non-glowing kind) that will turn into the same (bright glowing) kind when harvested. These flowers are an ingredient of Poison Resistance Potions, to be crafted in your Crafting Menu (opened by typing "q" as the default key) or at any Crafting Table in older worlds. Wildwood flowers have the shape of blocks and can be placed.