Most hogweed problems reported in Tallinn
The Environmental Board reports successful hogweed control this year, but the worst infestations remain in Harju County and Tallinn, where the plant was introduced with soil for landscaping.
According to the Environmental Board, efforts to control hogweed this year have been successful, but the most severe problems persist in Harju County, including the capital Tallinn. The invasive plant is growing rapidly, forming large leaves close to the ground. Residents are advised to dig it up as soon as spotted.
Expert Eike Tammekänd from the Environmental Board notes that hogweed is less visible in everyday areas, having moved to more remote locations and forests. In Tallinn, the issue is particularly acute because the plant was brought in mass with soil used for urban greening.
Over the past decade, hogweed distribution has decreased, but complete eradication requires many years. This year, the Board plans to treat over 2,500 hectares containing thousands of growth sites.
Botanist Toomas Kukk explains that hogweed seeds remain viable in soil for years. If seeds have ripened, it is best to burn the dry inflorescences. Vegetative parts can be composted. Hogweed leaves can reach one square meter, depleting soil nutrients and hindering native plant growth.
