sand , peat moss, perelite mix

i started a grow outdoors this weekend and ended up diging a trench instead of dinging sepret holes for the plants, the area has lots of sand, similar to building sand, so i put layers of peatmoss while mixing in the existing sand and added lots of pereite there was alot of sand added to the mix about 30% moss15 % perelite and the rest sand. will my plants live.... theyl get lots of rain and im thinking of some slow release nutts insted of adding the nutes with water and feeding them directly. its going to drain alot of water so i want the best for my plants. anything i should know guys?, all help is apreciated !

I'd be worried about your plants getting nutrients like you said. Can any of those ingredients hold anything for the plant?

i guess the perelite would hold on to the nutes, and peat moss aswell. i was just worried my plant wont grow big cuz of improper soil

how did they turn out?