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Tree Pruning I

UW Botanic Gardens 3501 NE 41st St, Seattle

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

Tree Pruning II

UW Botanic Gardens 3501 NE 41st St, Seattle

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

Fruit Tree Pruning

PlantAmnesty Magnuson Park (The Brig), 6344 NE 74th St., Seattle

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

Free

Winter Fruit Tree Pruning Workshop SOLD OUT!!

TBD WA

SOLD OUT!! Experts in the field will demonstrate the basics of fruit-tree pruning in small groups, followed by plenty of opportunities for attendees to give it a try. This workshop is held at an orchard in Greater Seattle. *Prerequisite—You must attend the Fruit-Tree Pruning lecture to be able to attend this workshop (previous years classes […]

Free

Shrubs I

UW Botanic Gardens 3501 NE 41st St, Seattle

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

Shrubs II

UW Botanic Gardens 3501 NE 41st St, Seattle

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

Tree Pruning I

Bellevue Botanical Garden 12001 Main St., Bellevue

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 […]

Free

Tree Pruning II

Bellevue Botanical Garden 12001 Main St., Bellevue

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

Free

Prune & Renovate the Overgrown Landscape

UW Botanic Gardens 3501 NE 41st St, Seattle

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

Rose Pruning

UW Botanic Gardens 3501 NE 41st St, Seattle

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

Rose Pruning

PlantAmnesty Magnuson Park (The Brig), 6344 NE 74th St., Seattle

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

Free

Shrubs I

Bellevue Botanical Garden 12001 Main St., Bellevue

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

Free

Shrubs II

Bellevue Botanical Garden 12001 Main St., Bellevue

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 […]

Free

Prune-A-Thon 2020!

Sky Nursery 18528 Aurora Ave N, Shoreline

We're back for another mind-blowing Prune-A-Thon and we're cooking up new and improved lectures, activities for the kids, and ways to improve your landscape with the right trees and plants.

Fruit Tree Pruning

Bellevue Botanical Garden 12001 Main St., Bellevue

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  

Free

Shrubs III

Bellevue Botanical Garden 12001 Main St., Bellevue

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

Free

Japanese Garden Pruning

UW Botanic Gardens 3501 NE 41st St, Seattle

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

Shrubs III

UW Botanic Gardens 3501 NE 41st St, Seattle

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

How To Renovate And Prune The Overgrown Garden

Bellevue Botanical Garden 12001 Main St., Bellevue

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

Free

Art or Atrocity?

Bellevue Botanical Garden 12001 Main St., Bellevue

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 […]

Free

The Northwest Flower and Garden Festival

Washington State Convention Center 705 Pike Street, Seattle

We're looking for volunteers to talk to the attendees about our mission, to let them know that we're a resource and a fun one at that! As a thank you for volunteering, you will receive a wristband that is good for all-day access to the Northwest Flower and Garden Show.

Japanese Garden Pruning

Bellevue Botanical Garden 12001 Main St., Bellevue

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

Free

Conifer Pruning

Bellevue Botanical Garden 12001 Main St., Bellevue

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

Free

Vine Pruning

UW Botanic Gardens 3501 NE 41st St, Seattle

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

Fruit Tree Pruning

UW Botanic Gardens 3501 NE 41st St, Seattle

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

Vine Pruning

PlantAmnesty Magnuson Park (The Brig), 6344 NE 74th St., Seattle

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

Free

Vine Pruning

Bellevue Botanical Garden 12001 Main St., Bellevue

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

Free

Rehabilitative Pruning

Bellevue Botanical Garden 12001 Main St., Bellevue

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

Free

Pruning Art or Atrocity?

UW Botanic Gardens 3501 NE 41st St, Seattle

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

Rehabilitative Pruning

UW Botanic Gardens 3501 NE 41st St, Seattle

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

Spring Renovation Pruning Workshop

TBD WA

This Renovation Workshop is a popular hands-on all–day event that features a rare 3:1 student-teacher ratio and real world experience. Students learn pruning and creative solutions for the overgrown garden as an entire yard is renovated during the class. Topics discussed are pruning, transplanting, and landscape maintenance. The group will move through an overgrown landscape […]

Free

Shrubs II

PlantAmnesty Magnuson Park (The Brig), 6344 NE 74th St., Seattle

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 […]

Free

Vine Pruning: May 31

Zoom WA

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

Free

Shrubs II

Zoom WA

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 […]

Free

Rehabilitative Pruning

Zoom WA

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

Free

Tree Pruning I

Zoom WA

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 […]

Free

Vine Pruning: June 16

Zoom WA

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

Free

Plant Geek Trivia Night–CANCELED

Zoom WA

Don't be an outlier! Get in line to go online for our Plant Geek Trivia Night! Gather your forces to face off against the fertile (and possibly sneaky) mind of George Lasch as he challenges you to root deep into your plant knowledge. Admission is free for this social event. We encourage you to talk […]

Shrubs I

Zoom WA

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 […]

Free

Japanese Garden Pruning

Zoom WA

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

Free

Shrubs III

Zoom WA

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 […]

Free

Webinar: Science-Based Strategies For Using Wood Chips with Clay Antieau

Zoom WA

Wood chips have been commonly used as a mulch for many years yet this usage is based on misconceptions and a very narrow understanding of the function of wood in and on soil.  A more strategic use of wood chips in ecosystem restoration and ornamental landscapes in the Pacific Northwest has the potential to be […]

Free

How To Renovate And Prune The Overgrown Garden

Zoom WA

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 […]

Free

Art or Atrocity?

Zoom WA

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 […]

Free

Meeting of Like Minds: The Dirt Trilogy: Destruction, Insight, and Cure.

Zoom WA

  David R. Montgomery and Anne Bikle This event is FREE to all PlantAmnesty members.  Please login before registering!  Authors David R. Montgomery and Anne Biklé will draw on the three books comprising their Dirt Trilogy to tell the tangled and intriguing story of humanity’s relationship with soil. They’ll take us on a journey from […]

Free

Rehabilitative Pruning

Zoom WA

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

Free

Trees II: Am I Helping or Harming?

Zoom WA

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 […]

Free

Fruit Tree Pruning

Zoom WA

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 […]

Free

Fruit Tree Pruning

Zoom WA

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 […]

Free

Rose Pruning

Zoom WA

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.  

Free

Rose Pruning

Zoom WA

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.  

Free

Meeting of Like Minds: The Evolution of the Cass Garden

Zoom WA

  Enjoy our MOLM as a free, members-only benefit.  Please remember to log in before attempting to purchase tickets for this event. The evolution of the Cass Turnbull Garden on Capitol Hill has been underway for the past 3+ years. Join Kate Day as she describes how the garden has gradually emerged through partnerships and […]

Free

Tree Pruning I

Zoom WA

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 […]

Free

Tree Pruning I

Zoom WA

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 […]

Free

March Webinar: The values of public parks, exemplified by the Cass Turnbull Garden

Zoom WA

Join Daniel Winterbottom, Professor of Landscape Architecture at the University of Washington, as he describes the contributions that he and his students are making to the creation of the Cass Turnbull Garden, including their design for the southern section of the garden, and their installation of key features in the garden’s north section. In each of […]

Free

Tree Pruning II

Zoom WA

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 […]

Free

Tree Pruning II

Zoom WA

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 […]

Free

Spring Shin-Dig 2021

Online

Enjoy three exciting seminars at your convenience, then join us for a panelist discussion focused on registrants' questions.  We anticipate some lively back-and-forth as our panelists discuss answers to your questions! Planting for a Prune-less Garden:  Selecting the right plant for your goals is critical in building a beautiful garden.  Perhaps you simply want some […]

Free

Meeting of Like Minds: How Trees Inspire John Gradé’s Art

Zoom WA

Enjoy our MOLM as a free, members-only benefit.  Please remember to log in before attempting to purchase tickets for this event.   John Gradé (American, born 1970 in Minneapolis, MN) lives and works in Seattle, WA. Inspired by changing geological and biological forms and systems in the natural world. John works with his studio team […]

Free

Shrubs I

Zoom WA

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 […]

Free

Shrubs I

Zoom WA

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 […]

Free

May Webinar: Engaging the community to obtain data on forest health

Zoom WA

The Forest Health Watch is designed to engage communities in research and learning about native plant health issues. The pilot project of the program is focused on the dieback of Thuja plicata, and community scientists are needed to accelerate the research. Western Red Cedar is a critical component of native cultures and ecosystems in the […]

Free

Shrubs II

Zoom WA

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 […]

Free

Shrubs II

Zoom WA

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 […]

Free

Shrubs III

Zoom WA

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 Shondell Kelley

Free

Shrubs III

Zoom WA

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 Bess Bronstein

Free

Japanese Garden Pruning

Zoom WA

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

Free