Answer: Compost is a great soil amendment, especially for sandy soil. The general rule of thumb is to spread 4-5" of compost over the soil and dig it in to a depth of 8-10 inches. This is where most of the roots of annual and perennial plants will grow, and it's a good depth for shrubs, as well. After tilling the amendments into the soil, leveling the bed and planting, spread another 2-3 inches of organic matter over the bare soil around the plants to help suppress weeds and slow evaporation.
Good luck with your new beds!
Q&A Library Searching Tips