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Is a bacterial infection specific to horse chestnuts and both the re and white flowered types are affected. If the canker girdles the tree, it dies.
Cracks in the bark on stems and trunks of affected trees, and a sticky, rusty looking liquid oozing from them. Dead sections of bark will fall away exposing the wood and reveal a brown or purple discoloured area of inner bark. Gradually the infection causes crown thinning, die-back and even death of part or all of the tree. Cankers can be seen at any time of year.
Now you know what the problem is, and the damage it is doing, don't let your plant suffer.
For specific problems try one of our specialists...
RHS Garden, Wisley
Woking, United Kingdom
Vallarta Botanical Garden
Vallarta, Mexico
Butchart Gardens
British Columbia, Canada
RHS Harlow Carr
Harrogate, United Kingdom
Royal Botanic Gardens, Kew
Richmond, United Kingdom
Eram Garden
Shiraz, Iran
