by Jeanne McRight Stratify your native seeds indoors if you are trying to get a head start with a spring or early summer (before June 15th) plant installation. Indoor stratification is like giving seeds a simulated winter in your fridge—a cold, moist period (usually 2 to 3 months) that breaks their natural dormancy, mimicking how they'd overwinter in soil, so they wake up ready to sprout in spring, ensuring better survival and germination for many native plants . Two basic me