S
Spudnick
Guest
i got the worm castings from a local worm farm in the countryside, cost me like £35 for a quarter of a ton, lol and the bat guano i got of ebay uk its npk is 1-15-0 Caribbean
hope this helps are you planning on making an organic soil mix
using a fairly crappy/cheap mix atm , would love some worm castings but its too expensive.