Diatomaceous Earth can be used on microscopic worms/insects/larvae in your indoor seed start mixes and transplant mixes. It has sharp edges that damage the pests. This is how my friends use it on microscopic pests like hatched fungus gnats. I also use neem oil and cinnamon and show you how I use a water bottle to create a trick to bottom water my container transplants so the surface is not disturbed. You want the surface to dry out. You don’t need to do all these things but might find an idea that helps you.
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