Speaking engagements

John is becoming more popular as a speaker all the time.  Below is a list of conferences and symposia where John will be speaking over the next few months if you'd like to go see him.  If you'd like to book John to speak to your group, he has several talks of interest to gardeners, ecologists, naturalists, stone mason and others.  A list of talks John has prepared can be found at the bottom of the page, or if you'd like something more personalized, just make a suggestion and we can tailor things to your needs.


New Directions in the American Landscape Symposium PA/ CT

Conferences for landscape architects and designers now regularly feature topics in ecology and sustainability.  New Directions in the American Landscape (NDAL) has been a pioneering influence for this change since 1990, and it continues with even greater relevance today.

NDAL programming has featured visionary creative and ecological minds, from Ian McHarg to Doug Tallamy to Leslie Sauer to Nigel Dunnett.  This persistence of vision coupled with a commitment to practical knowledge represents an enduring contribution, and NDAL’s legacy has inspired a community of practitioners.


Garden Wise Symposium York, PA

March10th, 2018

Native plants in a changing landscape- more info to come


32nd Annual Lahr Native Plant Symposium

Saturday, March 24, 2018, 9:00 am – 4:00 pm

The U.S. National Arboretum hosts a full day of presentations and discussions. Registration will become available in February 2018.

FONA Native Plant Sale

FONA will hosts a Native Plant Sale in conjunction with the Arboretum’s annual Lahr Symposium on Native Plants. No registration required for the plant sale.