Learn the three most common forms of mal-pruning (tree topping, over-thinning of trees and shrubs, and inappropriate shearing) and how to fix trees and shrubs that have been mal-pruned. Taught by Lauren Rogers

This class covers pruning and management of some of our most common ornamental vines: wisteria, common varieties of clematis, Boston ivy/Virginia creeper, trumpet vine and honeysuckle. Taught by Laura Watson

Conifers play by different rules than their flowering friends. This class will cover timing and where to make cuts that will help conifers stay vibrant. Taught by Bess Bronstein

Creating and maintaining a Japanese Garden requires a high level of pruning skill and dedicated annual maintenance. This class covers the pruning of Japanese maples (upright and weeping), bamboo, cloud pruning pines and tamamono shearing. Taught by Bess Bronstein

This class covers the three main forms of mal-pruning: tree topping, inappropriate shearing of trees and shrubs, and over thinning. We compare and contrast mal-pruning with bona fide examples of pruning art: pollarding, cloud pruning, topiary, pleaching, and coppicing. This class ends on a humorous note with photos of the Good, the Bad, and the…

This is one of PlantAmnesty’s most popular classes and offers an introduction to pruning and landscape renovation. Learn how to undo overplanting errors, learn more about transplanting and cleaning up the landscape. Taught by Shawna Van Nimwegen

The Puzzlers and Consequences. This class teaches how to prune Rhododendron, Hydrangea, Callicarpa (Beautyberry), Viburnum bodnantense and Abelia. Included in this class are basic pruning techniques, common pruning mistakes and corrective pruning. Taught by George Lasch

Learn the basics of fruit tree pruning. Covers apple, cherry, plum, and pear trees. This lecture series is designed for those who work in landscape maintenance. Taught by Don Marshall  

Shearables, Hackables & Untouchables. There are some plants that are cut to the ground each year, but there are others you barely touch and it's pandemonium! Find out which ones are which, as well as which plants are appropriately sheared every year. Plants include butterfly bush, lavatera, heather, lavender, rockrose and witch hazel. Taught by…

The Friendly, Fearless an Forgiving. This class covers basic cuts, basic plant habits and what Cass Turnbull called the “pruning budget”. It also covers five plants that are relatively easy to prune: nandina, evergreen azalea, lilac, camellia and yew. Taught by George Lasch

This is the HOW TO class for pruning trees (not fruit or nut trees). How to prune a tree limb, how to find the branch collar, pruning young and mature trees, pruning standards, crown restoration and the basics of tree risk assessment are covered. Taught by Ellie Bender

This is the science and biology behind the pruning of trees. Get the inside story on how trees grow and survive to become the longest lived, most massive species on the planet. Famous arboriculturalist Dr. Alex Shigo taught us that all pruning wounds trees. Find out how to minimize that damage and work with the…