50% Worm Castings 25% Promix 25% Perlite
Add a cup of PSG and dolomite lime per cubic foot of soil.
Soul recently published the following which differs from the above:
Lately I’ve been happier with a bit less wormcastings:
50% Pro-mix
25% perlite
25% wormcastings
I also mix in a cup of dolomite lime per cubic foot of soil & wet the mix with an organic tea made from dissolving a cup of PSG in a 5-gallon bucket of water.