After consideration, I've decided to write about urban trees, specifically boulevard trees and their unfortunate soil conditions in northern climates (i.e. road salts). After the loss of yet another mature Birch on my block, and while watching our little Ash struggle to keep up with the rest I'm provoked to learn more about planting, maintenance, and the long term health of these very beneficial (and beautiful) members of our community.
It's so sad to watch these enormous trees come down - thinking about how long it will take for their replacements to fill their void -
Although you may never sit in its shade, plant a tree for those who will.
two pdf files:
Tree Planting Guidelines
Canadian Trees eBook Vol. ONE, No. 1, 2004
...and a very helpful resource web page: Canadian Urban Forest Network (resources) (wow, what gardenerd loot!)
and I've ordered a copy of:
Ingram, David. Science and the Garden: The Scientific Basis of Horticultural Practice Blackwell Science Ltd (30 Jul 2002) ISBN 978-0632053087