How to get rid of hairy bittercress?

Hairy Bittercress Identification and Control

Hairy bittercress (Cardamine hirsuta) is a winter annual weed proliferating across Piedmont lawns and landscape beds. Small rosette-forming plants produce delicate white flowers followed by explosively dehiscent seed pods that scatter seeds throughout property. Even single plants produce thousands of viable seeds, enabling rapid population increase. Winter and spring are peak growth periods when control efforts prove most effective.

Hairy Bittercress Elimination

Hand-Pulling: Small populations are best managed through hand-removal while soil is moist. Remove entire plant including taproot to prevent regrowth. Collect seed pods carefully to prevent dispersal—these plants explode when touched, flinging seeds up to 6 feet.

Herbicide Treatment: Post-emergent broadleaf herbicides effectively eliminate hairy bittercress when applied to actively growing plants. Apply in fall (September-October) or early spring (March-April) for best results. Pre-emergent applications in fall prevent germination but don't affect established plants.

Cultural Management: Dense turf and landscape plantings prevent bittercress establishment. Maintain adequate mulch in planting beds. Remove plants before seed pod formation to prevent future generations.

Professional monitoring catches infestations early before explosive seed dispersal overwhelms control efforts.