Witches Broom

Garden Problems

Witches' broom disease is a condition found in many shrubs and trees. The affected plants form dense tufts of stunted growth resembling a broom head. It is caused by a variety of fungi, viruses and mites.

Identify the problem
Witches' broom is a symptom of several rust fungal diseases, viral diseases and infestation of Eriophyid mites. It is seen on roses, kakabeak, kowhai, silver beech and many other plants. It is important to establish the cause of the witches' broom so that appropriate action can be taken.
How to solve the problem
Identify the cause of the condition.
- Look for signs of mites. If insect or mite activity is found treat with Organic Super Spraying Oil.
- Look for signs of fungal infection - rust like brown marks or spots on leaves or stems.
- Carry out a protective treatment of affected plants in winter using Organic Super Sulphur.
Did you know?
- Witches' broom is a symptom or condition which is a response by a plant to infection by a disease or infestation by a bug, usually a mite.