If you’re having trouble getting seeds to germinate in soil with a high clay content, here’s one hint that might help. Rather than cover them over with the clay, use vermiculite instead.
Why?
Because clay can absorb heat, baking the seeds until they’re sterile and won’t germinate at all. It can also be difficult for developing seedlings to push up through clay. Vermiculite, on the other hand, has a spongy, loose granular structure that both keeps the internal temperature down and provides plenty of air and water for the seedling. It’s also soft and easy to grow through.
Check out our vermiculite! It’s great for raised bed gardening, too!
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