Sandy soil is both poor in nutrients and cannot retain moisture. Some vegetables and heath plants grow well in it, though. Amending it takes time.
1. Soils & Plant Nutrients NC State Extension Publications
The Secret To Improving Sandy Soil Quality - Growfully
Plants and vegetables for sandy soil - amend sand to make it richer
Preparing Garden Soil for Planting: Soil Amendments, pH, Nutrients
Organic Garden Soil: Use Organic Compost +more
7 Tips for Gardening in Sandy Soil - Gardening
Plants and vegetables for sandy soil - amend sand to make it richer
Soil Amendments Arizona SummerWinds Nursery
Plants and vegetables for sandy soil - amend sand to make it richer
How to Create Organic Soil for Your Healthiest Garden Ever
Preparing Garden Soil for Planting: Soil Amendments, pH, Nutrients
How to Amend Sandy Soil