Japanese Hedge Parsley is an invasive species native to Asia, Europe and northern Africa; a biennial herb that forms a rosette in the first year, then forms an umbrella shaped cluster of small white flowers in the second year. It grows up to six feet tall, but in this area it usual grows to 3-4 feet in height. Japanese Hedge Parsley looks similar to other native and non-native species of the carrot family. Japanese Hedge Parsley blooms from June through August. Currently Japanese Hedge Parsley is not regulated under the State of MN Noxious Weed Law, but is considered an invasive, high-risk species.
Japanese Hedge Parsley spreads quickly via seed and can populate in a variety of habitats but prefers woodland edges. Its hooked seeds attach easily to fur and clothing, so this invasive spreads mainly through contact. It has been found most often along hiking and bike trails, as well as other recreational areas; indicating that it spreads easily on footwear, tires, recreational equipment, and pets. Ensuring footwear, pets, and recreational equipment is cleaned after moving from one area to another can help prevent its spread.
Control methods for Japanese Hedge Parsley:
- Japanese Hedge Parsley can be easily hand-pulled when the ground is moist. It is flowering now, so this is an ideal time for removal before going to seed.
- Removal should focus on plants that have not yet flowered.
- Pulled plants that have already gone to seed should be bagged to prevent spread.
- Large infestations may be best controlled by herbicide treatment before flowering.
To see current distribution and report a siting, refer to EDDMapS.