1. Soil compaction & root damage
2. Topping & harmful cuts
3. Over-thinning & canopy elevations
4. Over-watering
5. Neighboring tree removals
6. Planting too deep
7. Wrong tree/wrong place
8. Cambial injuries to trunk
9. Poor cabling & damage repair
10. Over fertilizing or treating
The above list was compiled with feedback from North Amberican-based arborist.
