This is a two hour slideshow on tree pruning (not including fruit or nut trees). How to prune a tree limb will be covered, including branch collar identification and the basics of compartmentalization.

Also discussed--early training of trees, included bark, double leaders, ANSI tree pruning standards, crown cleaning, crown raising, utility line clearance pruning, mature tree pruning.

Mal-pruning will be shown and defined (tree topping, lion's tailing, over-thinning), as will crown restoration. Some specific trees will be covered--magnolia trees, ornamental crabapple, cherry and purple-leafed plum trees.

This lecture series is designed for those who work in landscape maintenance. Classes last two hours and are held on every other Thursday. Each lecture provides information on tools and techniques for quality pruning with better long-term results and customer satisfaction.

Classes held in partnership with PlantAmnesty.

Cost: $35/class. Discount available for series registrations and PlantAmnesty members.

Register online or by phone (206-685-8033)

Taught by Bess Bronstein