Mushroom Growing Course

Meet Your Instructor

Graham Calder, founder of P3 Permaculture, has over 16 years of experience designing food forests, regenerative farms, and ecological landscapes around the world.

Join thousands of gardeners who’ve improved their soil, yields, and confidence starting with this training.

see what our students say about out courses

Sydney Pyne 2025 ⭐⭐⭐⭐⭐

Participating in the Permaculture Practicum was such a valuable experience and an essential addition to the online course. The opportunity to put permaculture ideas into practice was inspiring and generative. Graham is an excellent educator and very knowledgeable facilitator; he adapted to the needs of our group and provided us with a customized and collaborative learning experience.

Kumha Lee 2024 ⭐⭐⭐⭐⭐

I had a great time in learning how we can make a small forest in our backyard. I also enjoyed all the interactions during the workshop for a full enough time to learn in detail. I enjoyed people, nature, connection with people, especially our instructor. Thank you so much!

Laura Wesley 2024 ⭐⭐⭐⭐⭐

I attended two workshops with Graham (so far!) He knows a lot about ecological design and is so generous in sharing his knowledge, contacts, equipment and ideas! I learned so so much. His workshops are informative, interactive, fun and hands-on. Exactly the kind of setting in which I learn best!

Karen Urtnowski 2021 ⭐⭐⭐⭐⭐

Excellent teaching, fantabulous food, and warm, curious folks. Permaculture seems to attract good people. The experience made me more skilled and more hopeful.

Mary Duggan 2025 ⭐⭐⭐⭐⭐

Graham is a gifted teacher and very generous with his knowledge. The course was well-planned and a huge variety of material was covered at two unique sites. I’ve completed two PDCs one online, one in person and this course delivered the exact ‘practical’ experience I needed to complement my previous training.

The P3 team graciously allowed me to share. That’s permaculture’s promise: learning, adapting, growing, giving.

Everyone’s permaculture journey is unique. I’m absolutely certain you will gain much from attending P3 Permaculture’s Advanced Practicum. I have absolutely put all of these learnings into practice.

Natasha Prevost 2025 ⭐⭐⭐⭐⭐

Graham is an excellent teacher, full of resources, literary and from the field. I was very happy to be trained and receive my PDC certification from him.

Heidi von Graevenitz 2024 ⭐⭐⭐⭐⭐

Excellent discussion and location. Hands on, informative, knowledgeable and experiential. Merci!!

Ashley Nelson 2017 ⭐⭐⭐⭐⭐

This PDC felt like a breath of fresh air for the soul. I can't imagine anyone not appreciating this course.

Anna Wortberg 2019 ⭐⭐⭐⭐⭐

Loved the class! So much knowledge that I will have with me for the rest of my life and that I can apply in every day life. Not just helpful if you want to become a permaculture consultant.

Léa Normand Feb 24, 2021 ⭐⭐⭐⭐⭐

I attended the 15-day intensive PDC camp. It was a wonderful experience! Graham is an excellent, passionate teacher who provides a wealth of information. The P3 team is welcoming, and everyone is kind and supportive. I would go back without hesitation!

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