In episode 25 of the Plants by Wade Lee podcast, host Wade Lee speaks with John McCallen, a passionate gardener from Southern California. They discuss John's journey into gardening, the importance of year-round plant interest, and how he uses social media to share his love for plants. John shares his experiences with gardening as a spiritual practice, the challenges of building a sustainable garden, and his upcoming projects. The conversation highlights the significance of composting, soil health, and the joy of gardening.