Distorted and discoloured sections at the end of twigs on hawthorn bushes. They are caused by an infection, either of a fungus (rust) or an insect which has laid an egg in the plant (gall).
Wildlife from Wolverhampton and nearby
Distorted and discoloured sections at the end of twigs on hawthorn bushes. They are caused by an infection, either of a fungus (rust) or an insect which has laid an egg in the plant (gall).