ANSI A 300 is the tree pruning standard set forth by The American National Standards Institute. These standards closely follow ISA pruning standards. Certified arborists  follow these guidelines.

 

 

 

Why are there trees I never walk under?

But large and meledious thoughts descend upon me.  -Walt Whitman

 
If I knew my life would end tomorrow, I'd still plant my apple tree. - Martin Luther King