Weed of the week: Leafy Spurge

Leafy spurge is a Category 1 noxious weed. This native of Eurasia was brought to the U.S. in the early 1800s. Infestations are common along waterways. This plant emerges early in the spring and quickly out competes its neighbors. Its deep taproots can exceed 20 feet, while its lateral roots spread out and displace desirable plants. Leafy spurge also produces a prolific amount of seeds. Stems of leafy spurge are 1-3 feet tall and have alternate, narrow, 1-4 inch long simple leaves. The flowers grow in small, yellowish green clusters surrounded by heart-shaped yellow bracts. Both the stems and the leaves contain a white, milky sap. The flowers are yellowish-green, small and arranged in many small clusters containing 7-10 flowers. Leafy spurge is difficult to control. Do not hand pull. Pop off buds, flowers and seed head. Bag these and remove. Be sure to wear gloves. Cutting and mowing are ineffective. Herbicides, biological control and grazing by sheep and goats will help control this hardy weed.