Some weeds are capable of both the summer and winter annual lifecycle. Biennials complete their lifecycles in less than two years. Germination and the production of an overwintering rosette of leaves occur the first year. The second year, flowering, seed production , and plant death occur. Control is best obtained during the first year.
Perennials live for more than two years.
They reproduce vegetatively from roots, rhizomes, buds, or tillers, or from seed, or both. They can be especially difficult to control because of their persistent root systems. Several weed control options are available. Prevention is the most practical and economical form of weed control. Be alert for new weeds on your farm, so they can be controlled before they become a serious problem.