Q & A

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#183676 Reply

E. Vinje
Keymaster

Zach,

Think of the the top soil the top most layer, and ideally contains organic matter and a diverse microbial selection. Worm castings are not the same as top soil, but they could be added to help increase the organic matter. Combining worm castings with a compost tea, in order to inoculate your medium, would get you the best.

Alternatively, you could dig up some topsoil in your area and just add it to mixture. However, this may have contaminants like weeds that can be competitive.

Good Luck!