Knowledgebase
Apple tree: Help with weak crotch #877109
Asked July 13, 2024, 4:52 PM EDT
Ingham County Michigan
Expert Response
Hello,
It’s important to address the crack in your apple tree to prevent further damage.
Here are some steps you can take based on information from educational sources:
Pruning: Excessive pruning during the summer can help reduce weight on the affected side of the crotch. However, be cautious not to over-thin, as increased fruit size and sugar content can increase susceptibility to fruit cracking.
Crotch Support: Consider installing a support system, like a brace or cable, to reduce stress on the crotch and prevent the crack from widening.
Tree Health Assessment: Have an expert assess the tree’s health. They can help diagnose the issue and provide specific advice on treatment and prevention.
OPTION 1:
For a confirmed and precise identification of the problem, I recommend you send all your images by e-mail to the MSU Plant & Pest Diagnostics Lab. The experts there can also provide you with the best treatment options. Their email is <personal data hidden>. Please include your name. The lab will let you know if they need a sample sent. FYI, the lab may also ask for additional images.
Their website is at this link:
Plant & Pest Diagnostics (msu.edu)
Their Contact Information is at this link:
Contact Us - Plant & Pest Diagnostics (msu.edu)
This link will explain the details of submitting a sample to MSU Plant & Pest Diagnostics Lab:
Submit Samples - Plant & Pest Diagnostics (msu.edu)
OPTION 2:
You can consult a local certified arborist for a more detailed onsite assessment and personalized advice. To find a certified arborist in your Zip Code, go to this link:
Find an Arborist (treesaregood.org)
Wound Care: If you decide to cut the branch, treat the wound properly to prevent disease entry. Clean cuts and proper wound care can help the tree heal better.
Monitor and Maintenance: Regularly monitor the crack and the tree’s overall health. Adjust care and support as needed.
IMPORTANT:
Cutting a large portion of the crown can be a drastic step, so it’s best to consult with a local arborist or tree care specialist before proceeding. They can provide guidance tailored to your tree’s specific condition and needs. Remember, each tree and situation is unique, and local professionals can offer the best advice for your circumstances.
I hope this helps! Please let me know if you have any other questions!
Great pruning reference at this link: