is miracle grow fruit and vegatable concentrated plant food good for mj im quet limited with money atm so anything that wont kill my plants would be great , i also have this baby bio plant food but i dunno this stuff looks more promising.
try finding some composted horse manure it's really cheap at the store (or free if someone has lots of horses: get the stuff in the middle of the oldest heap it's composted if it's been there for years). Also see into chicken manure if you have farms nearby. Also humus under trees is rich and free. For horse use up to 30% in your mix (all over). For chicken 10% (at bottom) Humus 10% You don't need much but that to grow all season. Add toppings on soil in beg. Flowering.