acorn food fruit leaf pest plant produce silk Terrestrial plant tree twig vegetable arthropod beetle flowering plant grass insect invertebrate Membrane-winged insect parasite cling damp garden green growth lichen plants reindeer food flowers Himalayan Balsam Impatiens glandulifera invasive pink stand weed flower pod carpet clover eire feed irland luck nature pest plant plain shamrock st. patricks weeds black bug closeup grasshopper hopper krayker legs macro monsoon animals bugs croton plant insects red redbug weevil alien Fallopia japonica foreign invader Japanese Knotweed natural nuisance close-up eat eating lack pears sting stinger wasp yellow