Knowledgebase
When and how to trim this locust tree? #909290
Asked July 10, 2025, 3:08 PM EDT
Hennepin County Minnesota
Expert Response
Hello Dianne,
Thanks for reaching out! It's best to trim locust trees in the late winter, when they are dormant. This will help you avoid stem cankers, and the wounds will seal with new growth: https://extension.umn.edu/planting-and-growing-guides/pruning-trees-and-shrubs#time-pruning-to-avoid-diseases-and-other-problems-1336760
You shouldn't need to treat the tree unless you see issues (dying leaves, insect damage, etc.). It looks healthy in the photos you sent, so you should be set unless issues crop up in the future. If so, you are welcome to submit a question again, and we can take a look!
Finally, I'd caution against any rope system for the tree. The trunk is fragile, and pruning it next winter might be enough to help it even out a bit. Trying to alter the direction of an adult tree (i.e., through staking or by using rope) is generally not recommended.
I hope this helps!