This plant often escapes from cultivation and forms dense mats. It can spread by fragmentation that occurs when an animal breaks off an area or by a piece floating downstream. It also spreads by seed dispersal and the seeds can be carried down streams or by animals.
In the right growing conditions, the plant can thrive and form very dense mats that choke out native vegetation. It grows best in water filled soils like flood plains and along the sides of river banks. Due to its affinity for wet areas, it poses a threat to Concord's wetlands.
Hand pulling is recommended for small plants such as this. This may be easiest in the early spring due to the fact it appears before many native species. Encouraging native grasses and other native species might also prove effective by decreasing the amount of light available to the invasive. Take care not spread any plants that have gone to seed. Remove completely from the site and dispose of in garbage bags or at the town composting site. Foliar spray is not recommended as it can be harmful to the surrounding floura and fauna. See the invasive removal page
for how to carry out these methods. Any removal within 100 feet of wetland resource areas, including certified vernal pools, or within 200 feet of a perennial stream may require approval from the Concord Natural Resources Commission. Please contact the Division of Natural Resources before you begin.
The following native plants can serve as a good replacement for garlic mustard in a garden:
- White baneberry (Actaea pachypoda)
- Columbine (Aquilegia canadensis)
- Black cohosh (Cimicifuga racemosa)