My brother, what area are you growing in or should I say: what type soil does the local ground your digging in contain? High clay, silt, sandy? Allot of times contrary to belief, if what your digging is even decent soil and has not had any or much chemical spraying, you can take a little time to mend it and use the very soil that your digging out of your holes. Takes a little time, but saves money and does a fine job as it doesn't sound like you have a compost pile right now. Simply take dirt you've dug out and remove any old roots or debris that is in it. Take then and mend it with 25% perilite and throw some worm poo in. Try to find worm poo that the worms have been fed something more than paper if possible but don't sweat it. Then if you have some places in town that will give you fruit scraps, throw some down in the the whole "banana peels apple cores, pears, even pumpkin seeds are wonderful " and feed with unsulfured molasses when you can. Helps save money and better all around if no compost pile. Will feed beautifully and produce wonderful healing meds, without emptying your pocket to buy someone else's ride. One love, rev.thenatural