01 · Evaluation
The four-legged stool
A useful assessment holds four questions together. No single observation tells the whole story.
Species
How this kind of tree grows, fails, and responds to local conditions.
Health
Vigor, foliage density, wounds, decay, disease, and root condition.
Structure
Trunk form, branch attachments, defects, lean, and past pruning.
Target
What people, property, streets, walks, and utilities could be affected.
02 · Pruning language
What the work columns mean
Crown clean
Remove dead wood of the specified diameter and larger from the canopy.
Structure prune
Remove crossing or rubbing branches and address competing leaders or weak attachments.
Weight reduction
Shorten an overextended limb to reduce lever force while retaining the branch.
Cable installation
Add supplemental support high in co-dominant trunks. It manages risk but does not erase the underlying weakness.
Crown raising
Create clearance over roads, walks, lawns, roofs, signs, and lights.
Water-sprout removal
Remove vigorous upright shoots that can crowd and rub within the canopy.
03 · Mulching
Protect the trunk flare
Mulch should cover the root zone in a broad, shallow ring. It should not be piled against the trunk.
Do this
- — Keep the root flare visible.
- — Spread mulch outward, not upward.
- — Leave a clear gap around the bark.
Avoid this
- — “Volcano” mulch against the trunk.
- — Repeatedly burying old mulch under new layers.
- — Damaging surface roots with tools.
04 · Operations
A yearly work cycle
- 1Spring leaf-out inventory
- 2Arborist review and budget alignment
- 3Resident notification before work
- 4Tree work, typically scheduled for fall
- 5End-of-year follow-up and record update
Why diversity matters
A canopy dominated by one species can be vulnerable to a single pest or disease. The working strategy favors native trees, avoids adding more Willow Oaks, and phases out Bradford Pears because of weak structure and invasive spread.