The Pruning of Apples and Pears by Renewal Methods

I have a first edition somewhere here,
filed with non-fiction alphabetically.
No dust jacket; a useful book, with clear
instructions given non poetically.
And yet how much of poetry is pruning,
how truly pruning makes a tree poetic,
a means of striking balance and fine tuning,
to gain a strong and simpler aesthetic.
And yet in cutting out the oldest wood,
criss crossing branches, timber inward growing,
we gain new growth, both vigorous and good,
succeed in improving what we had, showing
that when we cut, the branch, fed from the root,
regenerates to yield much finer fruit.