Bagged Compost.

commonrail:
They say chicken [zb] is especially good for growing onions.

Certainly is, I grow the comfrey plant to make liquid fertiliser with which is the best of the lot for all my tomatoes,peppers,cucumbers,chilli’s, Got a batch of nettle tea fermenting now in 5 gallon containers for the squash,pumpkin plants. Opened them yesterday to see how they’re going on & boy do they stink. I dilute both of these down to a 10-1 ratio & the plants love it.