Bur Ragweed is known by several names: Woollyleaf burasage, woolly leaf povertyweed and lagoonweed. It is a perennial forb native to North America, and reproduces by underground rhizomes and seeds. Seeds are tough and woody with hook-like spines.
The plants are erect, 1 to 2 feet high, bushy, and usually covered with fine woolly hairs. It is not abundant in south central Kansas, but is spreading east. Tillage practices sometimes chop up and spreads the rhizomes, which can root and grow new plants.
Timely herbicide applications along with the planting of competitive crops such as small grains is the most effective way to control Bur Ragweed.