Biggest concern when working with Compound Leaf trees is their dieback
tendencies. With some, this is not really a problem, but with others... careful
consideration should be taken into account when cutting, and one should always
cut further out from where they want to cut, to allow for this. At a later date, when
that portion has died back, it can be reduced further.
They do not heal over cuts very well. In fact often with most large cuts like when
one removes a thick branch, they will not heal over at all. If one cuts these branches
flush, often the area around the base of where the branch was will die too.
When trimming foliage it is best to retain the thorns that are sometimes found on
compounds, these often are where buds are located, so if removed, nothing will grow
from that area. On others, the buds are often located at the base of the leaf or leaf
stem. So when removing a leaf leave a little section and do not cut flush, prevents
dieback, and removal of buds.
Lastly, I will often go through and thin out my trees, to help let light in and promote
new growth further in. I do this reducing the amount of leaf on each stem. So, with
trees that are single compound like Campeche, I will cut back to the first or second
node on each leaf. If the leaf is very small like the Brazilian Raintree has, I will just
go through and remove some leaves altogether.
If the tree you are working on is double-compounded like the wild-tamarind in the first
post, you would want to cut back to the first branch on the leaf.