What Is That Strange Foam-Like Structure on Your Fence? A Backyard Discovery Explained
Finding an unfamiliar, foam-like brown mass attached to a fence post can feel unsettling at first. It might look like something you should remove immediately—but in many cases, it’s actually something beneficial. That unusual structure is most likely a ootheca, specifically from a praying mantis—and it plays an important role in your garden’s ecosystem. What…