How to Fix a Split Maple Tree Trunk

Written by faith mcgee
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According to Cornell University, bark splitting may not kill maple trees but it may create an entryway for harmful pathogens and fungal diseases. Your maple's bark splitting may be caused by a number of factors. Bark can split after rapid temperature changed in the spring, excessive growth in the fall or an old wound opening up in the bark. Regardless of the reason, gardeners should fix their split maple tree trunk to prevent a disease infecting their plant.

Skill level:

Things you need

  • Denatured alcohol
  • Bucket
  • Towel
  • Knife
  • Spray bottle
  • Fertiliser

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  1. 1

    Mix in a bucket a sterilising mixture to use to clean the knife before fixing the maple and in between any cuts to prevent spreading harmful pathogens. Pour 70 per cent denatured alcohol and 30 per cent water. Dip the knife in the mixture and wipe with a towel.

  2. 2

    Remove the bark 1/2 to 1 inch around the split, starting from the top and cutting down to the bottom of the split on one side, and repeating the procedure on the other side of the split. You will be creating an oval cut.

  3. 3

    Pour the sterilising mixture into a spray bottle. Spray the split bark area.

  4. 4

    Press a clean towel against the split area to remove any excess mixture.

  5. 5

    Give your maple tree an all purpose fertiliser with a NPK amount of 10-10-10 when the maple tree comes out of dormancy in the spring. The extra nutrients will aid in the healing process.

Tips and warnings

  • Wrap newly planted maple trees with tree wrap after pruning, to help prevent tree splitting.
  • Clean up leaves and dead debris around your split maple tree. Fungal diseases live in dead debris and can easily travel to the split area of your maple.

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