After Pruning what should be done

THREE IMPORTANT STEPS AFTER PRUNING:
 
DORMANT OIL - It's been proven by universities that the black "wound tar" over a new cut does NOT help or benefit the healing of the tree. However a Dormant Oil application after pruning will help in several ways. First it will create a film the discourages pest from trying to "stick" their eggs on that healing wound. Second it will suffocate existing eggs and insects overwintering on the tree. Third is is inexpensive and organic (cost anywhere from $5 to $16 a tree depending on size).

DEEP ROOT FERTILIZER - Pruning has taken away some of the photosynthesis provided last year so a fertilizer with Save-A-Tree (Thrive), combined with a true Tree Fertilizer with the minors included promotes the health and again is half the price of buying the products and doing it yourself.

SYSTEMIC DRENCH - Bayer Tree and Shrub is imidicloprid which is a pesticide that goes INSIDE the tree so insects and bores chewing into the tree are stopped. A twenty foot tree will cost around $13 and the last time I checked the retail bottle cost $19.94. Either way it is an excellent way to stop bores and aphid problems.

Link to best practice after pruning
Arborist Link on True Tree Facts