A gentle heat wave can help seeds germinate, but only if you keep the temperature in the sweet spot—like a greenhouse, not a grill. Too much heat and you’ll roast your seedlings and kill the soil microbes. Think of it as a slow, steady warm bath: enough to wake the roots but not enough to scorch the leaves. Test a small patch first, keep the air moving, and watch closely. It’s all about the balance, not the blast.