this morning on the radio show question was asked about where tree seedings could be found
here the web site where tree seedlings can be purchased -- trees can be shipped or picked up

http://www.forestry.ok.gov/conservation-seedlings

In Parker County, you can order & buy a large variety of seedlings twice a year at the extension service. They are on N. Main in Weatherford, TX. Twice a year they also sell wildflower seed including Bluebonnets.