Native Nebraska pasture plants such as Tall, Platte (prairie), Flodman, Yellowspine, and Wavyleaf (gray) Thistles can be beneficial for butterflies and provide seeds for songbirds. However, many ‘nonnative’ Thistle species are ‘Noxious Weeds’ that must be controlled depending on your Nebraska county. Todd Whitney, Nebraska Extension Forage Agronomist.