Do Plant Hardiness Zones Matter with Dan McKenney and John Pedlar

Do Plant Hardiness Zones Matter with Dan McKenney and John Pedlar

Author: Susan Poizner, OrchardPeople.com April 26, 2022 Duration: 45:48

In the past, you would consult a plant hardiness zone map if you wanted to know whether a fruit tree or any other plant could survive in your climate.  But our climate is quickly changing. Are plant hardiness zone maps still helpful?

In this episode, we chat about plant hardiness zones with two research scientists from the Canadian Forest Service. They are Dan McKenney, PhD and John Pedlar. You can learn more about their work and download plant hardiness maps here.

This month's recommended resource:
Arbor Day Foundations's new book Now is the Time For Trees: Make an Impact by Planting the Word's Most Valuable Resource (affiliate link)

You can find more information about plant hardiness zones below:

Canadian Plant Hardiness Zone Maps and More:
planthardiness.gc.ca

Change and Evolution in the Plant Hardiness Zones of Canada:
https://academic.oup.com/bioscience/article/64/4/341/247944

The generation of USDA-equivalent extreme minimum temperature models and a comparison with Canada’s plant hardiness zones:

https://cdnsciencepub.com/doi/10.4141/P05-070

 

Beyond Traditional Hardiness Zones: Using Climate Envelopes to Map Plant Range Limits:

https://academic.oup.com/bioscience/article/57/11/929/234249

The host of the Orchard People radio show and podcast is Susan Poizner of the fruit tree care education website www.orchardpeople.com.  


Susan is the author of four books on fruit tree care. Learn more here: https://learn.orchardpeople.com/books


She is also the creator of five-star rated premium online fruit tree care education at: https://learn.orchardpeople.com


HOW TO TUNE IN TO OUR PODCAST

The show airs on the last Tuesday of every month on RealityRadio101 at 1:00 PM ET! While it’s no longer live, you can still watch or listen anytime—and catch the recorded podcast anytime afterward.


📺 Video Podcast: Watch the recorded episode anytime on our YouTube Podcast Playlist.

🎧 Audio Podcast: Download the podcast and listen on your favorite app after it airs.

🌐 Article: Read the article linked to the show "How Does Climate Change Affect Fruit Trees?" and find the video and podcast links there too!

 

✍️ Do you want to learn to grow organic fruit trees successfully? Sign up for OrchardPeople.com's free monthly newsletter at https://orchardpeople.com/sign-up/


For premium fruit tree care education visit: https://learn.orchardpeople.com/


FOR MORE INFORMATION ON GROWING FRUIT TREES THAT THRIVE:


✂️ How to Prune Fruit Trees:

https://orchardpeople.com/how-to-prune-and-train-fruit-trees/

🪲 Fruit Tree Pests and Diseases:

https://orchardpeople.com/protecting-fruit-trees-from-pests-and-diseases/

🌳 How to Feed Fruit Trees:

https://orchardpeople.com/how-to-feed-fruit-trees/

🍎 The Best Fruit Trees to Grow:

https://orchardpeople.com/best-fruit-trees-to-grow/

🌱 How to Graft Fruit Trees:

https://orchardpeople.com/how-to-graft-fruit-trees/


These show notes may contain affiliate links to products. We may receive a small commission for purchases made through these links at no cost to you. Thanks for your support!


  • (00:00) - Introduction to Plant Hardiness Zones
  • (00:38) - Questioning the Plant Hardiness Zone System
  • (00:55) - Meet the Experts: Dan McKenney and John Pedlar
  • (01:16) - Understanding Plant Hardiness Zones
  • (04:49) - The Canadian vs. American Systems
  • (08:39) - Impact of Mulching and Snow on Plant Hardiness
  • (11:02) - Listener Questions and Expert Insights
  • (12:11) - Epigenetics and Plant Adaptation
  • (22:12) - Updating the Plant Hardiness Zone Maps
  • (26:27) - Climate Change and Plant Hardiness
  • (32:27) - Adapting to Climate Change: Challenges and Variations
  • (33:09) - Late Spring Frosts and Plant Sensitivity
  • (33:47) - Listener Insights: Climate Change in Northern Indiana
  • (36:27) - Strategies for Home Growers
  • (38:15) - Sugar Bush Experiences and Climate Variability
  • (41:04) - Advice for Gardeners Adapting to Climate Change
  • (43:37) - Closing Remarks

Imagine stepping into your own backyard and picking a perfect, sun-warmed apple from a tree you nurtured yourself. That tangible connection to the land and the deep satisfaction of growing your own food is at the heart of Orchard People. Hosted by fruit tree care educator Susan Poizner, this podcast digs into the practical and often surprising world of cultivating fruit trees, whether you have a few pots on a balcony or several acres to explore. Each episode feels like a thoughtful conversation with a knowledgeable friend, as Susan and her guests unpack the nuances of pruning for better harvests, managing pests without harsh chemicals, and understanding the life beneath our feet through soil health. You’ll hear from specialists on topics like grafting heirloom varieties, designing resilient food forests, and integrating permaculture principles into any space. It’s more than just tips and tricks; it’s about building confidence and community around sustainable growing. Tune in to this garden-focused podcast for grounded advice that helps both new and experienced growers foster healthier trees and more abundant yields, season after season.
Author: Language: en-us Episodes: 100

Orchard People
Podcast Episodes
How to Choose the Right Fruit Tree with Josh Davis [not-audio_url] [/not-audio_url]

Duration: 40:12
Learn how "anyone can grow" by choosing the right fruit tree with Josh Davis, a Master Gardener and Fruit Tree Grower in South Carolina, on this episode of the Orchard People Radio Show.He is known as Uncle Josh Gardens…
Growing Medlar Trees with Jane Steward [not-audio_url] [/not-audio_url]

Duration: 47:12
Learn how to grow and enjoy the fruit of the overlooked and forgotten medlar (Mespilus germanica) with Jane Steward, author of MEDLARS - Growing & Cooking (affiliate link), founder of Eastgate Larder in North Norfolk, UK…
Best Apple Trees for Warm Climates with Larry Stephenson [not-audio_url] [/not-audio_url]

Duration: 45:37
Learn about the best apple trees for warm climates with Larry Stephenson, nurseryman at Southern Cultured Orchards and Nursery in Coldwater Mississippi and NAFEX director, on this episode of the Orchard People Radio Show…
Pruning to Improve Fruit Quality with Harold Thornbro [not-audio_url] [/not-audio_url]

Duration: 50:36
Learn how to make your fruit trees produce better quality fruit with specialist fruit tree pruning!In this special episode, Harold Thornbro, Host of The Modern Homesteading Podcast (https://redemptionpermaculture.com/cat…
Espalier Fruit Tree Pruning with Andy Lewis [not-audio_url] [/not-audio_url]

Duration: 46:40
Learn espalier fruit tree pruning and the Lorette pruning system with Andy (Apples) Lewis, Lead Grower at The Newt in Somerset, UK, on this episode of the Orchard People Radio Show.Plus, don’t miss this month's Spotlight…
How to Keep Water in the Soil with Bill Wilson [not-audio_url] [/not-audio_url]

Duration: 53:27
How can you create a self-watering permaculture garden or orchard? The secret is in the soil! We explore that topic with Bill Wilson of MidwestPermaculture.com in this episode of the Orchard People radio show. Learn abou…
Best Fruit Tree Pruning Tools [not-audio_url] [/not-audio_url]

Duration: 58:54
Best Fruit Tree Pruning Tools with Ron Perry. Learn about the best fruit tree pruning tools with Ron Perry, Ph.D, Professor Emeritus, Department of Horticulture, Michigan State University (MSU). Ron Perry is the co-autho…
Columnar Apple Trees for Small Gardens [not-audio_url] [/not-audio_url]

Duration: 59:45
Learn about Columnar Apple Trees for Small Gardens in this episode of the Orchard People radio show. Our guests are: Kenong Xu, Associate Professor, and Laura Dougherty of Cornell University in Geneva New York and Angela…
Fruit Tree Nutrient Deficiencies with Eric Hanson [not-audio_url] [/not-audio_url]

Duration: 1:01:22
Learn how to look at fruit tree leaves and identify common nutrient deficiencies (ie a lack of nitrogen, magnesium or boron) with Eric Hanson, Professor Emeritus of Horticulture Michigan State University.The host of the…