Classes & Workshops

Classes

Each year PlantAmnesty expert instructors teach pruning techniques in our twelve-part Master Pruner Series. Topics include: artistic pruning, fruit trees, landscape renovation, Japanese garden pruning, ornamental vines, pruning roses, and species-specific tutorials. This series provides students with a solid base in the science and practice of selective pruning. Students are given access to a broad range of pruning information at each two-hour presentation.

Classes are open to master gardeners, landscapers, gardeners, horticulture students as well as the general public.  Students may complete Master Pruner classes individually or work toward a Master Pruner certification by completing the entire series.  Classes are currently being offered online only.

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Would you like to become a member and enjoy a discount on your registration fee today?  Click here to join before registering.

 

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January 2020

Classes

Tree Pruning I

January 9, 2020 @ 9:30 am - 11:30 am
UW Botanic Gardens, 3501 NE 41st St
Seattle, WA 98105 United States
+ Google Map

The science and biology behind tree pruning with minimal injury to the tree. Taught by Bess Bronstein Register with UW Botanic Gardens

Find out more »
Classes

Tree Pruning II

January 9, 2020 @ 12:30 pm - 2:30 pm
UW Botanic Gardens, 3501 NE 41st St
Seattle, WA 98105 United States
+ Google Map

The "how-to's" for making good cuts, structural pruning for trees of any age, pruning standards, and crown restoration. Taught by Bess Bronstein Register with UW Botanic Gardens

Find out more »
Classes

Fruit Tree Pruning

January 12, 2020 @ 10:00 am - 12:00 pm
PlantAmnesty, Magnuson Park (The Brig), 6344 NE 74th St.
Seattle, WA 98115 United States
+ Google Map
Free

Learn the basics of fruit tree pruning and why you should prune them differently than other trees. This class will cover apple, cherry, plum and pear trees. Taught by Ingela Wanerstrand

Find out more »
Classes

Shrubs I

January 23, 2020 @ 9:30 am - 11:30 am
UW Botanic Gardens, 3501 NE 41st St
Seattle, WA 98105 United States
+ Google Map

The Friendly, Fearless an Forgiving.  This talk will focus on nandina, evergreen azalea, lilac, camellia and yew pruning. Taught by Mary Machala Register with UW Botanic Gardens

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Classes

Shrubs II

January 23, 2020 @ 12:30 pm - 2:30 pm
UW Botanic Gardens, 3501 NE 41st St
Seattle, WA 98105 United States
+ Google Map

The Shearables, Hackables and Untouchables.  Find out which plants are which, and how to correctly shear. Taught by Christina Pfeiffer Register with UW Botanic Gardens

Find out more »

February 2020

Classes

Tree Pruning I

February 4, 2020 @ 9:00 am - 11:00 am
Bellevue Botanical Garden, 12001 Main St.
Bellevue, WA 98005 United States
+ Google Map
Free

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 tree’s natural defenses. We will also cover the basics of tree risk assessment. Taught by Bess Bronstein

Find out more »
Classes

Tree Pruning II

February 4, 2020 @ 12:00 pm - 2:00 pm
Bellevue Botanical Garden, 12001 Main St.
Bellevue, WA 98005 United States
+ Google Map
Free

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

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Classes

Prune & Renovate the Overgrown Landscape

February 6, 2020 @ 9:30 am - 11:30 am
UW Botanic Gardens, 3501 NE 41st St
Seattle, WA 98105 United States
+ Google Map

Basic pruning & creative solutions for the overgrown or overplanted landscape Taught by Shawna Van Nimwegen     Register with UW Botanic Gardens

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Classes

Rose Pruning

February 6, 2020 @ 12:30 pm - 2:30 pm
UW Botanic Gardens, 3501 NE 41st St
Seattle, WA 98105 United States
+ Google Map

Learn the right way to prune roses: hybrid teas, climbers & landscape roses Taught by Emily Ross Register with UW Botanic Gardens

Find out more »
Classes

Rose Pruning

February 9, 2020 @ 10:00 am - 12:00 pm
PlantAmnesty, Magnuson Park (The Brig), 6344 NE 74th St.
Seattle, WA 98115 United States
+ Google Map
Free

Learn the basics of rose pruning and how to approach the different types of roses, including - hybrid tea, shrub and climbing roses. We will provide resources to great local organizations and how to approach pruning roses in Western Washington. Taught by Keith Dekker

Find out more »
Classes

Shrubs I

February 11, 2020 @ 9:00 am - 11:00 am
Bellevue Botanical Garden, 12001 Main St.
Bellevue, WA 98005 United States
+ Google Map
Free

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

Find out more »
Classes

Shrubs II

February 11, 2020 @ 12:00 pm - 2:00 pm
Bellevue Botanical Garden, 12001 Main St.
Bellevue, WA 98005 United States
+ Google Map
Free

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 Anna Moore

Find out more »
Classes

Fruit Tree Pruning

February 18, 2020 @ 9:00 am - 11:00 am
Bellevue Botanical Garden, 12001 Main St.
Bellevue, WA 98005 United States
+ Google Map
Free

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  

Find out more »
Classes

Shrubs III

February 18, 2020 @ 12:00 pm - 2:00 pm
Bellevue Botanical Garden, 12001 Main St.
Bellevue, WA 98005 United States
+ Google Map
Free

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

Find out more »
Classes

Japanese Garden Pruning

February 20, 2020 @ 9:30 am - 11:30 am
UW Botanic Gardens, 3501 NE 41st St
Seattle, WA 98105 United States
+ Google Map

Specialized pruning techniques for Japanese maples, bamboo, cloud pruning of pines, and tamamono shearing will be covered. Taught by Bess Bronstein Register with UW Botanic Gardens

Find out more »
Classes

Shrubs III

February 20, 2020 @ 12:30 pm - 2:30 pm
UW Botanic Gardens, 3501 NE 41st St
Seattle, WA 98105 United States
+ Google Map

The Puzzlers & Consequences Taught by Ken Tuomi Register with UW Botanic Gardens

Find out more »
Classes

How To Renovate And Prune The Overgrown Garden

February 25, 2020 @ 9:00 am - 11:00 am
Bellevue Botanical Garden, 12001 Main St.
Bellevue, WA 98005 United States
+ Google Map
Free

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

Find out more »
Classes

Art or Atrocity?

February 25, 2020 @ 12:00 pm - 2:00 pm
Bellevue Botanical Garden, 12001 Main St.
Bellevue, WA 98005 United States
+ Google Map
Free

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 Bizarre. Taught by George Lasch

Find out more »

March 2020

Classes

Japanese Garden Pruning

March 3, 2020 @ 9:00 am - 11:00 am
Bellevue Botanical Garden, 12001 Main St.
Bellevue, WA 98005 United States
+ Google Map
Free

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

Find out more »
Classes

Conifer Pruning

March 3, 2020 @ 12:00 pm - 2:00 pm
Bellevue Botanical Garden, 12001 Main St.
Bellevue, WA 98005 United States
+ Google Map
Free

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

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Classes

Vine Pruning

March 5, 2020 @ 9:30 am - 11:30 am
UW Botanic Gardens, 3501 NE 41st St
Seattle, WA 98105 United States
+ Google Map

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

Find out more »
Classes

Fruit Tree Pruning

March 5, 2020 @ 12:30 pm - 2:30 pm
UW Botanic Gardens, 3501 NE 41st St
Seattle, WA 98105 United States
+ Google Map

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 Ingela Wanerstrand Register with UW Botanic Gardens

Find out more »
Classes

Vine Pruning

March 8, 2020 @ 10:00 am - 12:00 pm
PlantAmnesty, Magnuson Park (The Brig), 6344 NE 74th St.
Seattle, WA 98115 United States
+ Google Map
Free

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

Find out more »
Classes

Vine Pruning

March 10, 2020 @ 9:00 am - 11:00 am
Bellevue Botanical Garden, 12001 Main St.
Bellevue, WA 98005 United States
+ Google Map
Free

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

Find out more »
Classes

Rehabilitative Pruning

March 10, 2020 @ 12:00 pm - 2:00 pm
Bellevue Botanical Garden, 12001 Main St.
Bellevue, WA 98005 United States
+ Google Map
Free

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

Find out more »
Classes

Pruning Art or Atrocity?

March 19, 2020 @ 9:30 am - 11:30 am
UW Botanic Gardens, 3501 NE 41st St
Seattle, WA 98105 United States
+ Google Map

Three forms of mal-pruning will be explained and compared with bona-fide examples of pruning art such as pleaching, pollarding, and coppicing. Taught by Christina Pfeiffer Register with UW Botanic Gardens

Find out more »
Classes

Rehabilitative Pruning

March 19, 2020 @ 12:30 pm - 2:30 pm
UW Botanic Gardens, 3501 NE 41st St
Seattle, WA 98105 United States
+ Google Map

This advanced class will discuss how to restore mal-pruned trees and shrubs. Taught by Christina Pfeiffer Register with UW Botanic Gardens

Find out more »

April 2020

Classes

Shrubs II

April 12, 2020 @ 10:00 am - 12:00 pm
PlantAmnesty, Magnuson Park (The Brig), 6344 NE 74th St.
Seattle, WA 98115 United States
+ Google Map
Free

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 Anna Moore

Find out more »

May 2020

Classes

Vine Pruning: May 31

May 31, 2020 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

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

Find out more »

June 2020

Classes

Shrubs II

June 7, 2020 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

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 Anna Moore

Find out more »
Classes

Rehabilitative Pruning

June 9, 2020 @ 9:00 am - 11:00 am
Zoom WA United States
Free

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

Find out more »
Classes

Tree Pruning I

June 14, 2020 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

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 tree’s natural defenses. We will also cover the basics of tree risk assessment. Taught by Bess Bronstein

Find out more »
Classes

Vine Pruning: June 16

June 16, 2020 @ 9:00 am - 11:00 am
Zoom WA United States
Free

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

Find out more »

July 2020

Classes

Shrubs I

July 12, 2020 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

The Friendly, Fearless and 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 Anna Moore Are you a member?  Please login to your account before registering. Would you like to become a member and enjoy a discount on your registration fee today?  Click here to join before registering.

Find out more »
Classes

Japanese Garden Pruning

July 26, 2020 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

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

Find out more »

August 2020

Classes

Shrubs III

August 9, 2020 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

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 Lauren Rogers Are you a member?  Please login to your account before registering. Would you like to become a member and enjoy a discount on your registration fee today?  Click here to join before registering.

Find out more »

September 2020

Classes

How To Renovate And Prune The Overgrown Garden

September 13, 2020 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

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 Keith Dekker Are you a member?  Please login to your account before registering. Would you like to become a member and enjoy a discount on your registration fee today?  Click here to join before registering.    

Find out more »

October 2020

Classes

Art or Atrocity?

October 11, 2020 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

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 Bizarre. Taught by Christina Pfeiffer

Find out more »

November 2020

Classes

Rehabilitative Pruning

November 8, 2020 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

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. Included is a discussion on waterspouts, suckers, radical renovation techniques, and crown restoration. Taught by Christina Pfeiffer

Find out more »

December 2020

Classes

Trees II: Am I Helping or Harming?

December 13, 2020 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

It is STRONGLY advised to have taken Trees I prior to this class. This is the “How- to” class for the practical application of the pruning concepts learned in Trees I. See examples of good and bad pruning decisions. Learn the best practices for making pruning cuts, training young trees and tree maintenance. Examples for specific species will be given. The basics of tree risk assessment will also be covered. Taught by Ellie Bender, an ISA certified arborist who draws from extensive experience in her classes.…

Find out more »

January 2021

Classes

Fruit Tree Pruning

January 5 @ 7:00 pm - 9:00 pm
Zoom WA United States
Free

Learn the basics of fruit tree pruning and why your pruning strategies might be different when you prune for production. This class will cover apple, cherry, plum and pear trees.  Dormant season is a good time to prune many of our more common fruit trees, but summer pruning may be better for some fruits and some particular pruning goals.  Learn what seasons are recommended for different goals.  Taught by Shondell Kelley Online Tuesday evening classes will be recorded.  Recordings will…

Find out more »
Classes

Fruit Tree Pruning

January 10 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

Learn the basics of fruit tree pruning and why your pruning strategies might be different when you prune for production. This class will cover apple, cherry, plum and pear trees.  Dormant season is a good time to prune many of our more common fruit trees, but summer pruning may be better for some fruits and some particular pruning goals.  Learn what seasons are recommended for different goals.  Taught by Ingela Wanerstrand Online Sunday classes will not be recorded for later…

Find out more »

February 2021

Classes

Rose Pruning

February 2 @ 7:00 pm - 9:00 pm
Zoom WA United States
Free

Learn the basics of rose pruning and how to approach the different types of roses, including hybrid tea, shrub and climbing roses.  Taught by Shondell Kelley Online Tuesday evening classes will be recorded.  Recordings will be available for viewing by registrants for two weeks following the class date.  

Find out more »
Classes

Rose Pruning

February 14 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

Learn the basics of rose pruning and how to approach the different types of roses, including hybrid tea, shrub and climbing roses.  Taught by Keith Dekker Online Sunday classes will not be recorded for later viewing.  

Find out more »

March 2021

Classes

Tree Pruning I

March 2 @ 7:00 pm - 9:00 pm
Zoom WA United States
Free

This class is a prerequisite for Trees II. This is the science behind our pruning decisions. In this class you will be introduced to a tree’s structure and biology. You will learn how and why trees respond to various events. Better outcomes can be achieved when you learn to work with a trees natural processes rather than fighting against them. Signs that may indicate a problem tree will also be covered. This class will be recorded and available for viewing…

Find out more »
Classes

Tree Pruning I

March 14 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

Pruning trees makes sense when you understand the science behind it. You will be introduced to the basics of tree biology, including apical dominance and tree responses to wounding (development of callus and woundwood, as well as compartmentalization of decay). Tree structure is covered, with discussion of branch attachments, codominant stems and included bark. Proper pruning cuts are explained in detail, including how to safely remove large limbs, correctly reduce branch length, and encourage branching when appropriate. Current ANSI tree…

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April 2021

Classes

Tree Pruning II

April 6 @ 7:00 pm - 9:00 pm
Zoom WA United States
Free

It is STRONGLY advised to have taken Trees I prior to this class. This is the “How- to” class for the practical application of the pruning concepts learned in Trees I. See examples of good and bad pruning decisions. Learn the best practices for making pruning cuts, training young trees and tree maintenance. Examples for specific species will be given. This class will be recorded and available for viewing by registrants for 2 weeks following the class date. Taught by…

Find out more »
Classes

Tree Pruning II

April 11 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

This class will show you how, what and when to do specific types of tree pruning. Structural pruning of young trees is covered, as well as mature tree pruning techniques including crown cleaning, crown thinning, crown raising and crown reduction. Pruning cycles, pruning doses, and seasonal timing are explained. Mal-pruning is defined (tree topping, lion’s tailing, over thinning), and rehabilitative pruning techniques are shown. This class will be recorded and available for viewing by registrants for 2 weeks following the…

Find out more »

May 2021

Classes

Shrubs I

May 4 @ 7:00 pm - 9:00 pm
Zoom WA United States
Free

The Friendly, Fearless, and Forgiving. This class covers basic cuts, basic plant habits and what Cass Turnbull called the “pruning budget."  We will provide examples of five plants that are relatively easy to prune: nandina, evergreen azalea, lilac, camellia, and yew. Taught by Mary Machala Are you a member?  Please login to your account before registering. Would you like to become a member and enjoy a discount on your registration fee today?  Click here to join before registering.

Find out more »
Classes

Shrubs I

May 9 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

The Friendly, Fearless, and Forgiving. This class covers basic cuts, basic plant habits and what Cass Turnbull called the “pruning budget."  We will provide examples of five plants that are relatively easy to prune: nandina, evergreen azalea, lilac, camellia, and yew. Taught by Mary Machala Are you a member?  Please login to your account before registering. Would you like to become a member and enjoy a discount on your registration fee today?  Click here to join before registering.

Find out more »

June 2021

Classes

Shrubs II

June 1 @ 7:00 pm - 9:00 pm
Zoom WA United States
Free

Shearables, Hackables & Untouchables. Some plants can be 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 discussed include butterfly bush, lavatera, heather, lavender, rockrose and witch hazel. Taught by Keith Dekker

Find out more »
Classes

Shrubs II

June 13 @ 10:00 am - 12:00 pm
Zoom WA United States
Free

Shearables, Hackables & Untouchables. Some plants can be 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 discussed include butterfly bush, lavatera, heather, lavender, rockrose and witch hazel. Taught by Keith Dekker

Find out more »
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