Hothouse is a podcast about design, ecology, and the way we garden now. Host Leah Churner sits down with experts and enthusiasts to talk about permaculture, the urban landscape, and how plants sometimes give us the feels. A meeting of the minds for plant people and the horticulture-curious, Hothouse is a different kind of gardening show: less of the how-to and more of the who, what, where, when, and why.
On this episode, we’re tackling Phosphorus – an element, crucial to life on earth, which exists in both abundance and scarcity. We cover how humans got hooked on P fertilizers, the political and environmental impacts of mining and pollution, and what might be done about it.
Mentioned in this episode:
City of Austin Algae Mitigation;Toledo Junction Coalition Interview; Points North Podcast; US EPA explanation of phosphorus processing waste product storage; Florida Public Radio story about Florida mine disasters; Atlas Obscura podcast: “The Belt and Berm” Part 1 and Part 2; Atlas Obscura text: Moroccan Western Sahara Wall; Soil is Sexy
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25 Mar 2023
Horticulturati: The Multilayered Magic of Sheet Mulch
On this episode, we’re gettin’ down and dirty with sheet mulch. Sheet mulching is a no-till, no-dig gardening practice of removing unwanted vegetation and building fertile soil by layering organic matter and letting it compost in place. While the layers suppress weeds by blocking sunlight, subterranean soil biology goes to work to break down the layers into new soil. The beauty of this simple practice is that you can do it at any time of year with materials you have on hand (like cardboard, shredded paper, and leaves) or can source for free from local sources (arborist wood chips, coffee grounds, and spent mushroom substrate).
We discuss the reasons for sheet mulching, when and how to do it, and what to use. Then we dive into the corrugated controversy around cardboard and ponder the role of science in gardening.
Mentioned in this episode:
“Pocket Prairies with John Hart Asher” (Horticulturati podcast episode, 2022);
JHA pocket prairies ep of Horticulturati; Gaia’s Garden: A Guide to Home-Scale Permaculture by Toby Hemenway (2001); “Fungal Vision with Daniel Reyes” (Hothouse podcast episode, 2018); Mycelium Running by Paul Stamets (2005); Teaming with Microbes: The Organic Gardener’s Guide to the Soil Food Web by Jeff Lowenfels and Wayne Lewis (2006); “Mulches: The Good, The Bad, and the Really, Really Ugly” by Dr. Linda Chalker Scott (presentation to the Clackamas County Master Gardeners, 2019); “The Cardboard Controversy” by Chalker-Scott (Garden Professors blog, 2015); “Permaculture - More Concerns” by Chalker-Scott (Garden Professors blog, 2010).
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Email us info@horticulturati.com
14 Mar 2023
Horticulturati: Fruit Tree Care with Susan Poizner
"Fruit trees need hands-on care." That's the motto of our guest, Susan Poizner of OrchardPeople.com (https://orchardpeople.com/). Susan is an urban orchardist, teacher, journalist, and filmmaker. She is the author of Growing Urban Orchards (2014), cofounder of the Ben Nobelman Park Community Orchard in Toronto and the host of the Urban Forestry Radio podcast. She also teaches fruit tree classes on her website. Colleen was eager to interview Susan after taking her online courses. Susan gives us the basics on why fruit trees need human intervention to thrive; we also discuss urban orchards, heirloom species, food forests, and Susan's transition from journalism to horticulture. Then Colleen and Leah discuss the impact of Austin's recent ice storm on fruit trees.
Mentioned in this episode:
North American Scion Exchange (https://www.facebook.com/groups/scionexchange/) (Facebook group).
Join THE HORTICULTURATI PATREON (https://www.patreon.com/Horticulturati) for early access to episodes and bonus content! Email us at info@horticulturati.com or call the Horticulturati Hotline at 347-WAP-HORT.
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