Master Pruner Series & Certification

To see a detailed listing of our upcoming pruning classes and workshops, please scroll down.


PlantAmnesty expert instructors teach topic-specific pruning techniques in PlantAmnesty’s Master Pruner Series. The classes in the series are open to the public, master gardeners, landscapers, gardeners, horticulture students, and members of PlantAmnesty. The series was designed to provide a solid base in the science and practice of selective pruning. Students are given access to a broad range of pruning information while attending a 12-part series of two-hour PowerPoint presentations. Topics include the following:

  • Landscape renovation

  • Pruning roses

  • Fruit trees

  • Ornamental vines

  • Artistic pruning

  • Japanese garden pruning

  • Tree pruning

  • Species specific tutorials

To receive PlantAmnesty’s Master Pruner certificate, students must attend all lectures and three hands-on, all-day workshops held annually in the King County.  The workshops are available through PlantAmnesty. See the list of upcoming classes and workshops below.

Two Ways to Take Classes

Students may take classes in the Master Pruner individually or complete the entire series. Students completing the seminar series and requisite workshops receive a Certificate of Graduation. The seminar series is available two ways:

  1. From PlantAmnesty, on second Sundays of the month at Magnuson Park in NE Seattle (not including August or December). Preregistration is not required for the Magnuson Park classes. The classes held at 6344 NE 74th Street, Seattle 98115 (aka The Brig) in Magnuson Park.

  2. The ProHort Program of the University of Washington Botanic Garden’s Center for Urban Horticulture also offers the the Master Pruner Seminar Series on weekdays in winter. Preregistration is required. Click here for details.

Seminars attended at any location count toward a Master Pruner certificate, but the programs are administered and priced separately by hosting organizations. See specific class listings for costs and class descriptions.

2017 Class Fees

The PlantAmnesty classes are just $25 each for the general public; $20 for PlantAmnesty members, $5 for horticulture college students and native Spanish speakers. No pre-registration for classes at Magnuson Park is necessary.  Just show up and pay at the door. Questions?  Contact PlantAmnesty at or 206-783-9813.

People who join PlantAmnesty at a Seattle Magnuson Park class get the first class free, receive an informational two-hour DVD on pruning, and receive a discount on all future classes.


Workshops are for home gardeners, landscape professionals, and students in the Master Pruner Program.  Complete details and materials will be sent to students a few weeks prior to the workshop.  To earn a Master Pruner Certificate, students must take at least three hands-on workshops, in addition to the required classes.

Know a yard that needs an Extreme Makeover? We are always looking for a site for upcoming renovation workshops. Click here for 2017 site requirements.

Scroll down to see all classes and workshops, including registration and fees.  Classes and workshops are in date order.

Download a printable PDF of the complete schedule of the

2017 Master Pruner Series, Classes and Workshops

Click here for printable PDF of Workshop registration form.

Driving Directions to PlantAmnesty

Upcoming Classes and Workshops

Master Pruner Series: Difficult Plants to Prune

 When:    Sunday, May 14, 2017-- 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

For more information:  Contact PlantAmnesty at or 206-783-9813.

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 Ken Tuomi and Anna Moore

PlantAmnesty’s 2017 Master Pruner Workshops

 Click here for printable PDF of Workshop registration form.

Spring Renovation Workshop - April 15, 2017   Sold Out
Spring Fruit Tree Field Day - June 24, 2017        Sold Out
Fall Renovation Workshop - September 16, 2017


Renovation Workshops are a popular hands-on all-day event that features a rare 3:1 student-teacher ratio and real-world experience. Students will learn pruning and creative solutions for the overgrown garden through hands-on experience as an entire yard is renovated during the class.  The group will move through an overgrown landscape while on-the-spot evaluations of plants and demonstrations of pruning are given. Workshop participants will then cycle between jobs to learn what the landscape has to offer. Location: TBD.

Pruning Workshop (in Spanish) - October 6, 2017

This class and hands-on field day is designed for Spanish-speaking landscape professionals. The morning lecture will be given in Spanish by George Ortiz, CLT. In the afternoon everyone will assemble at a landscape for hands-on practice on common landscape trees and shrubs. Participants will work in small groups with experienced teachers. A PlantAmnesty certification of completion will be given.