How to get rid of spurweed?

Spurweed: Identifying and Controlling This Winter Annual

Spurweed is a troublesome winter annual that thrives in Charlotte's cool season, germinating in fall and growing through winter and spring before setting seed in late spring. This low-growing weed produces distinctive star-shaped seed heads and spreads rapidly through seed production. In cool-season overseeded lawns, spurweed competes aggressively with desirable rye grass and can quickly spread if left untreated.

Identification and Life Cycle

Spurweed appears as a low rosette of narrow leaves with distinctive four-sided prickly seed pods forming by late April and May. The seed heads look like tiny four-pointed stars, making identification relatively easy once you know what to look for. The plant thrives in cool weather and typically dies naturally as temperatures warm in June, but not before producing thousands of seeds for next year's germination.

Control Methods for Spurweed

• Manual Removal: For small infestations, pull plants in early spring while soil is moist, removing entire root systems to prevent regrowth
• Pre-Emergent Herbicides: Fall applications of pre-emergent herbicides in September block spurweed seed germination before establishment
• Post-Emergent Treatment: Post-emergent herbicides containing 2,4-D effectively control established spurweed from January through March while weather is cool
• Mowing Timing: Never allow spurweed to develop seed heads. Mow frequently to remove flower buds before seed formation
• Turf Density: Thick, healthy cool-season turf naturally suppresses spurweed germination and growth

Spring Management Strategy

Watch for spurweed infestations by March, before seed heads develop. Spot-treat emerging infestations with herbicide before they spread. Remove any seed heads manually before mowing if they've already formed. After warm-season grass begins spring green-up in April and May, spurweed naturally declines as competition from vigorous turf increases.