If your flower beds look great but your porch smells musty after a rain, your mulch might be part of the problem. In warm, humid regions, some mulch stays wet long enough to grow fuzzy patches and kick off that “basement” odor outdoors, and sometimes it doesn’t stop there.
When you spread the wrong material too close to the house, you can trap moisture where you least want it: near siding, vents, and foundations. That extra dampness can creep into crawl spaces, wall cavities, and garage corners, especially during long stretches of sticky weather. This guide will help you spot the mulch most likely to contribute to mold problems and show you how to keep your beds tidy without feeding fungus.
