Raised planter beds are the answer if you have poor nutrients in sandy or clay soil. Instead of struggling with poor topsoil, all you need to do is fill your raised planter bed with high-quality, nutrient rich soil mixes. Nutrient rich soil means less struggles for plants and less frustration for the gardener. To keep the soil in your raised plant bed healthy, all you need to do is mix in compost and other organic mater at the end of each season.