This is bacterial canker which can kill the tree if not dealt with. Prune out dead or dying branches then treat stem cankers (areas around the gum) by painting with a paste made from Copper Mixture from Vitax. If possible, spray the tree later with Copper Mixture when the leaves are half open.
Gardening Expert: |
If you can't find what you are looking for on the website then you can ask one of our experts. To get in touch with us Click Here
We will try to get back to you with an answer as soon as we can.
Did you find this answer useful? Subscribe to our newsletter for gardeing news, projects, special offers and competitions.
The New York Botanical Garden
New York, United States
Nongnooch Tropical Garden
Pattaya, Thailand
Royal Botanic Gardens, Kew
Richmond, United Kingdom
Royal Botanic Gardens Victoria
Melbourne, Australia
Gardens of Versailles
Versailles, France
Powerscourt Gardens
Enniskerry, Co. Wicklow, Ireland