Check out the Texas Forestry Service nursery website for cheaper sources of seedlings. Lots of other good forest and tree info on there, and it is run by Texas A&M. I am going to be planting a bunch of cypress this winter. Gonna try many locations and depths from dry land to a foot or two deep. Hopefully the pond level will be down so that I can try to plant a few further out. Cypress may not make it unless it can get established in dry soil. Established cypress can take submersion much better but will grow slowly, like Sgt911's Houston and pond tree differences. They also like well drained soils, so the clay that is needed for a pond will result in slow growth also. The place I am getting mine sells 25 seedlings for $40 which would allow you to try several depths and areas.