Classes & Workshops


PlantAmnesty instructors teach pruning techniques through our Master Pruner Program. A series of twelve 2-hour classes provides students with a solid base in the science and practice of selective pruning. Our instructors are professionals in the field and bring years of personal experience to their classes.

Our classes are open to professionals and to the general public and may be taken individually for specific interests.

The nine core classes include:

  • Tree Pruning I and II   note: Tree Pruning I should be taken before Tree Pruning II or Fruit Trees.
  • Shrubs I, II, and III
  • Fruit Trees
  • Art or Atrocity
  • How to Prune and Renovate the Overgrown Garden
  • Rehabilitative Pruning

An additional three specialty classes from our offering can be selected for a total of twelve classes.

Please note:  Due to the coronavirus pandemic, all classes are currently being offered online only. Recordings of classes are available to view for two weeks after the class date.  There are currently no provisions for viewing the recordings outside the established schedule.

2021 Class Schedule

2022 Tuesday Class Schedule

2022 Sunday Class Schedule

Go to Classes

Learn about the Cass Turnbull Memorial Scholarship


Workshops are taught by experts in their field.  The workshops are hands-on, all day events designed for home gardeners and landscape professionals.

Go to Workshops

Workshop Sites

Do you know of a yard that needs an Extreme Makeover?  We are always on the look-out for renovation workshop sites. Take a look at our site requirements and if you think that you are a good fit, contact us at

Go to Site Requirements


Workshops will bring you up close and personal with the plants!

Volunteer Yard Renovations

PlantAmnesty organizes one-day volunteer yard renovations for people without the means to do the job themselves, so that good pruning is available to all.

Once a year, PlantAmnesty gardeners meet to do for gardens what our arborists do for the trees on Arbor Day.  It’s a cross between a party and a yard clean-up.  Yeah, that’s it, it’s a Garden Party.  Mostly, we weed like dirt devils, deadwood ’til the carpal tunnel kicks up, and kill what needs to be killed (plant-wise, that is).

With ten or twelve dedicated gardeners, we utterly transform a needy and deserving landscape in one sunny (and it’s always sunny) afternoon.  It is extremely gratifying. Experienced gardeners share with the new kids.  Hobbyists mingle with the pros.  You get to check out how others rig their trucks, what tools they use, and especially – you professional gardeners – separate your charity work from your regular work!

PlantAmnesty arborists will do the same for trees. Up to twenty companies gather to prune deserving trees for their community. This is for the greater Seattle region only.

Contact us for info about the next yard renovation event.