Sandy loam soil is ideal for most types of plants, so make it a goal to transform your sandy soil into sandy loam over time. This is a process that will take years, but you will see improvements as you go and I promise it will be worth your effort. After following the advice I’m going to give you next, I was able to transform my beach sand soil into rich, sandy loam in about a decade. Your soil’s transformation may go even quicker.
In addition to watering, amending your sandy soil with organic matter is the most important thing you can do to help your plants flourish. Organic matter can come in a variety of forms. Some good ones include shredded leaves, compost, peat moss, manure, earthworm castings, soil conditioner, finely shredded bark, straw and pine needles.
In the fall, when everyone else on your block is bagging their leaves and sending them to the curb, shred your leaves instead and lay them back into your garden beds in a 3-4” thick layer as a winter mulch. By spring, they will be mostly decomposed. The remainder can be raked into your soil or covered up with bark mulch. This free resource is the one I take advantage of the most in my own garden. As a result, my sandy soil is much richer and contains earthworms that are further enriching it – all free of charge!