Trees in West Michigan, specifically Grand Rapids, are subject to extreme weather. This extreme weather can stress the tree and create broken limbs and tree cavities. Many homeowners take it upon themselves to repair these cavities with homemade remedies (foam, cement, etc). This is not a good idea for a number of reasons. It usually worsens the citation to the point of requiring a tree removal. Proper tree pruning and tree trimming can help prevent tree cavities and broken limbs. Learn more about what to do when you find a tree cavity.