That white fuzz or musty smell showing up in a fresh batch of mix can feel like a gardening betrayal, especially when you made it yourself to save money. The good news is you usually don’t need fancy products to fix the problem—you need better moisture control, smarter storage, and a couple of cheap “reset” methods. Mold is often a symptom of a mix that stays wet too long, not proof you’re doing everything wrong. Once you know what’s feeding it, you can make a batch that stays airy, clean, and plant-friendly without spending more.
