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 King County.  The workshops are available through PlantAmnesty

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. 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.

The seminar series is available two ways:

  1. From PlantAmnesty, on second Sundays of the month at Magnuson Park (no classes in August or December). Preregistration is not required.  Just arrive a few minutes early and pay at the door.  Classes are held at 6344 NE 74th Street, Seattle 98115 (aka The Brig) in Magnuson Park. Become a PlantAmnesty member at any Magnuson Park pruning class and you will receive:  your first class free, an informational two-hour DVD on pruning, and a discount on all future classes! 2017 class fees at Magnuson Park are:
    • General Public - $25
    • PlantAmnesty members - $20
    • Horticulture college students - $5
    • Native Spanish speakers - $5
  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.


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

Upcoming Classes and Workshops

Master Pruner Series: Art or Atrocity 

 When:    Sunday, June 11, 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 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. Class ends on a humorous note with photos of the Good, the Bad, and the Bizarre.

Taught by Christina Pfeiffer

 PlantAmnesty’s 2017 Master Pruner Workshops

 Click here for printable PDF of Workshop registration form.

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.

Questions?  Contact us at or 206-783-9813.