The following risk signs might indicate that cabling is warranted:
- A tree with two or more large co-dominant leaders that split lower than 20 feet high.
- A tree with an unbalanced canopy especially when the heavy side of the canopy is over a valuable structure such as a house or garage
- A tree that is leaning
- A tree with heavy horizontal limbs extending over an important structure
The cables used to stabilize trees are made from extra high strength galvanized steel. Cables do not rust and they have a breaking strength of over 10,000 pounds. Cables that are 5/16th of an inch thick are more than adequate for most applications and are hardly visible in the canopy.