Where abouts do you find your worm castings? Or do you have a worm farm? I looked at the nursery and Home Depot and they had never heard of it. Is there something I'm missing?

Another question: Do you mix ALL of that together, or are they individual mixes by themselves? Would it hurt to put them all together? Considering the NPK of all, of course.

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Excuse me... I have to go to space now.