Biennial & Perennial Weeds
IRONWEED: TALL & WESTERN Vernonia gigantea and Vernonia baldwinii Life Cycle: Perennial Plant Description:
Clump-forming perennial herbs with erect stems 2 to 4 feet tall. Reproduce by rhizomes and seed. Long, lance- shaped leaves are sharply toothed with short hairs on lower surface. Reddish- purple flowers are arranged along slender branches at top of plant.
Treatment: Apply 12 to 16 fluid ounces of DuraCor ® herbicide per acre before flowering, during vegetative stage (starting when plants are about 10 inches in height) prior to bloom. Use higher rate in range when weeds are larger.
64
Made with FlippingBook Digital Proposal Creator