Master Pruner Series and Certification

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. 

For a full description of the program, including class descriptions, schedule and fees, see our Full List of Classes and Workshops.  Classes are open to master gardeners, landscapers, gardeners, horticulture students as well as the general public. Students may complete Master Pruner classes individually or complete the entire series. 

Two Ways to Take Classes

PlantAmnesty holds classes on the second Sundays of each month (except August and December) in the Brig at Magnuson Park (6344 NE 74th Street, Seattle 98115). Preregistration is not required. Just arrive a few minutes early and pay at the door. Cost: $25 per class, $20 for PlantAmnesty members, $5 for horticulture college students and native Spanish speakers. Join PlantAmnesty at any Magnuson Park pruning class and you will receive the following new member benefits: your first class free, an informational two-hour pruning DVD and a discount on future classes! The Master Pruner series is available two ways:

  1. The ProHort Program of the University of Washington Botanic Garden’s Center for Urban Horticulture offers the the Master Pruner Series on weekdays each winter. Preregistration is required.  Click here for details.  For a printable flyer, click here.

To receive a Master Pruner Certificate of Graduation, students are required to attend all twelve lectures (at either location) and three workshops provided by PlantAmnesty. A graduation ceremony is held each fall. Seminars attended at either location count towards the Master Pruner certificate, but the programs are administered and priced separately by the host organizations. 


Workshops are designed for home gardeners, landscape professionals, and students enrolled in the Master Pruner Series.  Complete details and materials are sent to students a few weeks prior to each workshop.  Do you know a yard that needs an Extreme MakeoverWe are on the look-out for renovation workshop sites. 

Click here for 2018 site requirements.

altSpring 2017 Renovation Workshop

Upcoming Classes and Workshops 



How to Prune and Renovate the Overgrown Garden CLASS

When: Wednesday, October 24, 2018 7 p.m. - 9 p.m.
Where: North Highline Fire Station #18 1243 SW 112th St. Seattle, WA 98146
Fee: $25/class, $20 for PlantAmnesty members, $5 for registered horticulture students and native Spanish speakers

This is one of PlantAmnesty's most popular classes, and covers pruning and landscape renovation. 

Taught by Shawna van Nimwegen


  The Shearables, Hackables, and Untouchables CLASS

  When:    Sunday, November 11, 2018 -- 10am - noon
  Where:   Sand Point Magnuson Park; 6344 NE 74th St (The Brig)
  Fee:        $25/class; $20 for PlantAmnesty members; $5 for

                horticulture students and native Spanish speakers

 Some plants are cut to the ground each year. But barely touch others,
 and all hell breaks loose. Find out which ones are which, as well as
 which plants are appropriately sheared every year. Learn how to prune
 butterfly bush, lavatera, heather, lavender, rockrose, broom, witch
 hazel, and others.

Taught by Anna Moore


5 Easy Plants to Prune CLASS

When: Wednesday, November 14, 2018 from 7 p.m. - 9 p.m.
Where: North Highline Fire Station #18 1243 SW 112th St. Seattle, WA 98146
Fee: $25/class, $20 for PlantAmnesty members, $5 for registered horticulture students and native Spanish speakers

This class covers basic cuts, basic plant habits and what Cass Turnbull called the 'pruning budget'. It also covers five easy plants that are relatively easy to prune and discussed:  nandina, evergreen azalea, lilac, camellia and yew.

Taught by Mary Machala