About us

Native Plant Source is the horticultural and landscaping division of Thompson Environmental Planning & Design Ltd.  A respected name in southern Ontario with project experience nationally and internationally.  We propagate, grow, and sell Ontario native plant stock at our greenhouse between Guelph, Ontaro and Kitchener, Ontario in the Region of Waterloo.


We specialize in designing and creating purposeful landscapes such as rain gardens, pollinator gardens and habitat gardens.

Our Services

Landscape Design & Installation

Customized designs for your yard, school or commercial / corporate business that reflect your vision and suit your needs and budget.  

Purposeful Landscapes

Pollinator gardens, rain gardens, and sustainable landscapes are our speciality. 

Native Plant Stock & Sales

Purchase Quality & Ontario - Sourced Products from our Greenhouse 

Native Plant Sales

Native Plant Source offers a wide range of Ontario native species.


Feel free to request our assistance in species selection, as we have a variety of methods and expert knowledge to help you ensure success in your native plant project.  With over 25 years experience in the field, our experts can make sure your project meets your expectations, in the most cost effective means possible.


Our 2025 Perennial Plant List is now available (our  Shrubs & Trees List is coming soon).  Click on the list's title below and it will open a PDF in a new window.  

 We also provide either list upon email request.


Our Location

Get in touch  519-240-4159 

Projects Done

Plants Types

Happy Clients

Awards