Organic Lettuce: Black Seeded Simpson are for sale at King Feed in Canyon Lake, Texas. You can call our store and place a curbside pickup for your plants or trees. If we don't have a plant, tree, or vegetable you are looking for, then we are happy to special order it. We buy all of our plants and trees from local nurseries right here in the great state of Texas. At the store, you can also find local fertilizer, soils, and other plant additives. The most important thing to remember is that we have everything the big stores have.