Search your county, town or property. Find out which invasive species are taking over your area.
Lesser celandine, a small yellow buttercup-like flower, is spreading across riparian areas and lowland woods throughout New Jersey. It spends much of the year underground as thickened, fingerlike tubers or underground stems. Lesser celandine is aggressive and emerges earlier than most native species. It easily displaces native spring ephemerals with its thick carpet of vegetation. This negatively affects native pollinators, which rely on spring ephemerals for nectar and pollen.
Small infestations can be dug out using a hand trowel or small shovel. For larger infestations, herbicide treatment is a more practical approach. Herbicide should be applied in the early part of the season when plants are in leaf before native nontarget species emerge.
Photo by Leslie J. Mehrhoff, University of Connecticut