How do I know if my tree has canker?
Sunken dead patches on bark, sometimes oozing, often with cracked margins. Branches above the canker die back. It attacks honey locust, ash, maple, poplar, many others.
What it does to the tree
A canker that has girdled more than about half the trunk circumference is structural, not cosmetic. Small branch cankers can be pruned out; trunk cankers usually can't.
Indiana specifics
Common on stressed honey locust and on trees with mower or string-trimmer damage at the base — which is a genuinely avoidable cause.
Related
- Can a tree with canker be saved?→
- Is canker a problem in Indiana?→
- What does treatment for canker cost?→
- Does canker spread to other trees?→
- What trees does canker attack?→
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- Is emerald ash borer a problem in Indiana?→