chasv77answered grow question 4 years ago If you have a lawn, just spread the dried dirt evenly over the grass, and let it dissolve into the sod.
If not, just intermix with any soil around your establishment.
To recharge to me, means you add whatever you think is right, and maybe you don't get it completely right and have nutrient issues throughout your next grow.
Since I am creature of habit, and know what it takes for my grows, I never try and re-purpose soil. I just use proven NEW soil.