The time to start vegetable crops in spring depends on the type of crop that you grow and the average last frost date. (Follow the link to the frost date map, or check with your local cooperative extension office for more exact timing of the average last frost.) Cool-season crops such as broccoli, cabbage, lettuce, peas, spinach, potatoes, and onions can be started a month or so before the average last frost date. Moderately tender crops such as beans and corn can be started at about the same time as the average last frost date. Very tender crops such as tomatoes, peppers, eggplant, squash, melons, and sweet potatoes should wait until several weeks after the average last frost date.
Sandy soil is generally excellent for growing vegetables because is has good drainage. However, it usually helps to add generous amounts of compost to help with water and nutrient retention.