Comment: John2K has some great advice.

(See in situ)

John2K has some great advice.

Sounds like you need some organic material turned in with the sandy material. Where we live it is very sandy also. We live right next to a river called the South Canadian, and it is basically a quarter mile wide sandy beach for hundreds of miles starting in Amarillo Texas and ending in Lake Eufaulah Oklahoma. Anyone who is a fan of John Waynes 'Rooster Cogburn' has heard about the South Canadian river. BTW I am lucky enough to be a direct descendent of Rooster Cogburn on my Grandmothers side.

Anyway..We were lucky enough to have an old barn on our place that hasn't been used in about ten years. I took the front end loader and cleaned it out by dumping a 4 inch layer on my raised beds and then turned the soil. We had an abundance of tomatoes for the next two years, and this year we will do it again, except with our compost piles that have finally had time to break down. Our 'Green Zebras' and 'Cherokee Purples' did fantastic with this setup. We never had grown Green Zebras before last year. They are absolutely wonderful! Tart, and just bigger than golf balls. We are now able to make green tomato relish and fried green tomatoes without cutting into our red tomato supply. If you haven't tried Cherokee Purples and Green Zebras, please give them a shot. The Cherokee Purples are the best tomato I have ever eaten. They make great salsa, sandwich tomatoes, and just slice and eat food. I am so in love with my Cherokee Purples!

Oh and can always take soil samples and have your local extension agency test them. That way you can figure out just exactly what your soil might need. Good luck!