Heavily amended super soil is great for a mature CBD plant and lethal for a seedling, which is why so many people lose their first few sprouts in the richest mix they own. Young roots cannot handle that nutrient concentration and the leaf tips curl and brown within days. The layering method, with plain seed starting mix on top of the amended soil, is described on https://calmcbdseeds.com and it lets the roots grow into the food gradually. Save the strong stuff for the final pot.
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