Tuesday, September 29, 2026

Wildfire Smoke vs. You and Your Garden

You know trouble awaits if there is a really orange sunrise on an otherwise clear morning. That usually indicates there’s lots of smoke in the air. In today's newsletter, we talk about the effects of wildfire smoke on you and your garden. In today’s podcast (above), University of California Wildfire specialist Kevin Marini discusses the wildland-urban interface areas and why they matter for wildfire risk. He explains that many homes in California and other states are built close to wild vegetation, and that it is embers rather than large flames that are often the main cause of home loss. We then focus on defensible space and the newer “Zone Zero” concept, a 0- to 5-foot area around homes and other structures. We describe how this zone should be kept free of flammable material, including most plants, mulch, cardboard, newspaper, outdoor furniture, gutters filled with debris, and poorly vented areas where embers can enter. We also cover the 5- to 30-foot zone, where spacing, pruning, and plant maintenance are important. We discuss avoiding fire ladders created by layered vegetation, reducing continuous lines of plants, and using hardscape, rock, or gravel to break up plantings. We note that irrigation and keeping plants hydrated can improve fire resistance. And, we discuss the best mulches to use in creating a defensible space. This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit gardenbasics.substack.com/subscribe (https://gardenbasics.substack.com/subscribe?utm_medium=podcast&utm_campaign=CTA_2)