Abiotic issues cover a wide range of problems (from poor site conditions to damage) that can cause stress, decline and even death in trees. While different from biotic issues like insects and diseases, abiotic issues frequently go hand-in-hand with other problems, often triggering tree stress that insects and diseases may then take advantage of. 



Photos courtesy:
Drought: Ellen Crocker
Tree girdling: Megan Buland
Improper mulching: Meagan Buland