? & comments Organic Gardening

I have always loved to garden but have never been as successful as I would like to be. I have long known that a plant is only as good as the ground its grown in. Southeast Texas soil is sick and tired, overworked, leeched of its mineral content, and stripped of its organic matter, leaving clay and a fine sandy silt that hardens to a concrete-like crust in the sun. This is a poor growing medium, which produces stunted plants and very little fruit.
I know that the organic material can be replaced by adding composted materials and maybe even seaweed from the beach, but replacing the mineral content is something I know very little about. I have heard that glacial gravel from Canada is a good source of minerals but have yet to find a website that will ship it. Do any of you have any knowledge or ideas as to how I can accomplish mineral replacement. Any idea or comment would be welcome. Thanks

Kirk

Seeing how I've grown up my entire life around farms......you'd think I'd know something but I know nothing about gardening. In fact my grandma always said I had the black thumb of death. She could grow anything even revive the stuff I killed.

What city that I'd recognize is Vidor close to?

Kristi,
Vidor is located on Interstate 10 east of Beaumont about 10 miles from the Loisianna/Texas border. Its a little town of about 19000 people. I have 6.5 acres in the middle of a 18 acre cow pasture. :)