The Science Behind "Leave the Leaves"

The Science Behind "Leave the Leaves"

From Backyard Ecology™ by Shannon Trimboli

October 9, 2025 · 48 min · Episode 111

About this episode

The episode discusses the scientific research on the impacts of leaving leaves in suburban yards and provides actionable steps for homeowners.

Summary "Leave the leaves" has become an increasingly common mantra each fall. However, until recently little to no scientific research had been done to quantify impacts of leaving your leaves in a typical suburban yard. We discuss the results of that research and actionable steps that you can take in your own yard. Today's guest Dr. Max Ferlauto is the State Entomologist for the Maryland Natural Heritage Program. He recently conducted research to quantify the impact of leaving our leaves in our yards. 3 things you'll learn from this episode: The impact that leaving your leaves can have on the numbers and diversity of insects and spiders in your yard. How removing your leaves can impact soil temperature, moisture, and organic matter. Practical, easy steps you can take even if you can't leave all your leaves. Bonus content The Difference That Leaving Your Leaves Makes Resources Max mentioned: Removing autumn leaves in residential yards reduces the spring emergence of overwintering insects Legacy effects of long-term autumn leaf litter removal slow decomposition rates and reduce soil carbon in suburban yards Other Backyard Ecology™ resources: Discover Your Next Steps Habitat…

People in this episode

Host: Shannon Trimboli

Guest: Dr. Max Ferlauto

Topics covered

  • leaving leaves
  • insect diversity
  • soil health
  • suburban ecology
  • environmental impact

Keywords

  • leaves
  • insects
  • soil temperature
  • organic matter
  • suburban yards
  • ecology
  • environment

Mentioned in this episode

Organizations: Maryland Natural Heritage Program

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