Houzz Logo Print

stratification for vegetable seeds

daninthedirt (USDA 8b, HZ9, CentTX, Sunset z30, Cfa)
2 months ago
last modified: 2 months ago

I've always had trouble getting good germination of carrot seeds. This year, I tried moist cold stratification, with moistened seeds left for 24 hours in the freezer. The results were surprising. I got fabulous germination. I've seen one (but only one) reference that suggests that several days moistened in the fridge benefits germination of beets. Am trying that now. My soil temperatures are such that direct planted seeds basically get little or no natural stratification. That's especially true since winter is when I dig in compost, and the further degradation of compost keeps the soil somewhat warmer. I'm curious what other vegetables benefit from seed stratification, and under what conditions (as in, freezer or fridge, for days or weeks, dry or moistened).

I'm a little puzzled by moist refrigerator stratification for winter vegetables, since those seeds could actually start to germinate at those low temperatures. Summer vegetables would not.