Finding an unusual structure in your backyard can quickly raise questions. You might notice a small, brown, foam-like mass attached to a fence, shrub, or tree branch and wonder whether it poses a risk. While it may look unfamiliar or even concerning at first glance, this curious object is usually harmless. In many cases, it is actually something beneficial quietly supporting your garden’s natural balance. The structure is most often a praying mantis egg case, called an ootheca. Created in late summer or fall, the female mantis produces a protective casing that hardens around her eggs, keeping them safe through...
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