Whether they arise from storm damage, pruning, or natural causes, many historic trees can end up with structural weakness or defects. To work around problems like these, there are more than four different suitable supplemental support systems.
Cabling
ANSI A300 Tree Care Standard Part 3 deals primarily with cabling, which is connecting two parts of the tree with a metal or synthetic cable.
Bracing
Installing a bolt or a threaded rod through a tree to prevent failure is called bracing. Large cracks in stems or branches can be stabilized through bracing. Typically, a cable is also used above the brace.
Propping
Support systems can also include propping which is putting support underneath the part of the tree that needs it.
Guying
It also includes guying, which is installing a cable securing the tree to the ground, or another structure.
Splinting
Is a way of training branches to grow in the preferred directions. This involves taking a branch that’s growing one way and wrapping it with soft material to train it to grow another way. If the top of a tree breaks, a side branch can be trained to be vertical, so that it can assume its place as the new top of the tree.