The soil of your garden needs water to function properly. This is why a lot of soil problems have to do with water problems. For example, when your garden does not get enough water, mulch will sit dry, plants won’t grow vigorously, and drought-loving weeds will thrive. Other than capturing water on landscapes and preventing soil erosion in gardens with slopes, water problems can be divided into two categories. The first one is excessive drainage and the second one is poor drainage.
Sandy soils are extremely poor at holding water. This is one of the reasons why sandy beaches dry so quickly compared to clay beaches. However, sandy soils also have a number of advantages, including warming faster in the spring and providing better conditions for drainage-intolerant plants such as asparagus and rooting crops such as carrots. Sandy soils in sensitive gardens also allow for better control of watering conditions because they only make water available when you add it to the soil. This being said, sandy soils are extremely challenging for growing most popular crops. To improve the conditions of gardens with sandy soils you need to use organic amendments that help the soil hold on to water, slow drainage and provide more consistent nutrition to plants and soil organisms. Other strategies that enhance the water-holding capacity of sandy soils include heavy mulching, creation of sunken beds and swale usage to direct water.
Poor drainage is another extreme that can hurt your garden. Reserving poorly draining areas for accessory garden activities, planting wetland plants and building organic matter to enhance soil conditions are some of the strategies that experts like Jeffry Hill suggest you use to deal with this issue.