Common Beggar-ticks, also knows as Devil’s Beggar-ticks (Bidens Frondosa) is an annual forb in the Aster Family (Asteraceae). It’s native to the United States, blooms Jun-Oct and grows 5-6 ft. It’s commonly found in wet prairies, swamps, wetlands and near streams in forests; tolerates standing seasonal water to dry soils and partial shade to full sun exposure.
Common Beggar-ticks gets very weedy, it’s known to outcompete other native vegetation. In habitat restoration, it can replace dead Reed Canary Grass and other weeds after herbicide applications. It is an introduced plant in Alaska and Southern Canada. Mature plant seed heads are a nightmare for habitat restoration workers and explorers; spikes can stick like a tick to clothing, too many of them will render clothes useless.
Similar plants include: