Identifying and Controlling Burnweed (Fireweed) in Lawns and Mulch

Burnweed (Erechtites hieracifolia) is a fast-growing annual that germinates in thatch and mulch. It produces dandelion-like seeds that disperse widely. Pre-emergent herbicides for broadleaf weeds applied in March can prevent it, but hand-pulling is easy and effective for small infestations. For larger areas, a broadleaf weed spray works.

One plant can seed an entire neighborhood, so early removal is key. It's not controlled by standard grassy-weed pre-emergents, so use a broadleaf-specific product if needed.