Live Crown Removal Limit (Pruning Dose)
The ANSI A300 Part 1 live-crown removal check.
Example
You enter
- Live crown / foliage before pruning (ft² or %) 100
- Foliage proposed for removal (same units) 15
- Maturity class mature
You get
- Removal percent 15%
- Cap (%) 25
Details, formula, and sources
removal_pct = removed / live x 100 against the maturity-class cap (mature <= 25% in a season, young ~15%, over-mature ~10%, stressed 0%). The 25% is the mature-tree MAXIMUM, not a target -- a young or stressed tree gets far less. Lion's-tailing violates A300 even under the percent cap.
removal_pct = removed_foliage / live_foliage x 100; cap_pct = mature 25 / young 15 / over-mature 10 / stressed 0; within when removal_pct <= cap_pct.
The ANSI A300 Part 1 live-crown removal limit (ISA Best Management Practices - Pruning), by name.
The A300 removal-limit percentages are published arboricultural practice; a qualified arborist governs the actual dose.
Estimate. AHJ and licensed professional govern.
Field names used by the API: live_foliage, removed_foliage, maturity_class, removal_pct, cap_pct
- Class caps mature <= 25% single season, young ~15%, over-mature ~10%, stressed 0%ANSI A300 Part 1
- Lion's-tailing stripping interior foliage violates A300 even under the percent capISA BMP - Pruning