👉 A wormweed is a small, flat plant that grows in damp areas of the ground and on trees. It is often associated with the name "wormwood" because it has been used historically to treat worms and other parasites in many cultures. However, there are other types of plants that can grow in similar conditions, such as the common wormweed (Festuca spicata), which grows in wet areas but also blooms during warmer months. Wormweed is a common weed in many parts