This part of the A300 standards applies to pruning and trimming operations.

Part 1 Pruning addresses:

  • Pruning objectives
  • Pruning systems
  • Pruning specifications
  • Pruning cuts
  • Pruning practices
  • Palms and similar plants
  • Pruning definitions

A300 Pruning standards recognize, but are not limited to, the following pruning objectives:

  • Manage risk
  • Manage health
  • Develop structure, such as to: Improve branch and trunk architecture Promote or subordinate certain leaders, stems, or branches; Promote desirable branch spacing; Promote or discourage growth in a particular direction (directional pruning); Minimize future interference with traffic, lines of sight, or infrastructure, or other plants; Restore plants following damage; and/or, Rejuvenate shrubs.
  • Provide clearance, such as to: Ensure safe and reliable utility services; Minimize current interference with traffic, lines of sight, infrastructure, or other plants; Raise crown(s) for movement of traffic or light penetration; Ensure lines-of-sight or desired views; Provide access to sites, buildings, or other structures; and/or, Comply with regulations.
  • Manage size or shape
  • Improve aesthetics
  • Manage production of fruit, flowers, or other products
  • Manage wildlife habitat

Advisory Notice:

Certain pruning practices are not acceptable and can injure trees:

  • Topping: The reduction of a tree’s size using heading cuts that shorten limbs or branches back to a predetermined crown limit.
  • Lion’s Tailing: The removal of an excessive number of inner, lateral branches from parent branches.
  • Rooster-Tailing: The over-thinning of palms, usually by removing too many lower, live fronds.

Part 1 Pruning Resources: