Need to add dirt to garden

Throw tarp on ground.

Add 1/3 peat moss
Add 1/3 mixed composts
Add 1/3 perlit or vermiculite

Mix all that together.

Right now Lowes is running Sta Green garden soil for 3/$10

Doesn't help you right now but might be useful later.... In the late fall I put all my bush / branch trimmings into a small electric woodchipper and spread the chips in the vegetable garden. Around this time of year, I usually have a lot of oak leaves on the ground. I rake them up and use them as mulch in the garden. Helps keep dirt moist, and plants off the bare dirt. In between plantings I till all this into the soil. All this helps keep the garden fertilized and also replaces any soil that compacts or gets washed away.