They sell mostly hybrid poplars of several varieties. I think they specialize in large commercial orders, but they also do small personal orders. I ordered a few dozen trees from them earlier this year, and was very pleased with their product. I've ordered similar trees from Gurneys and Springhill before, but the trees from Frysville were of vastly superior quality. The growth rate of the HP 308's I ordered has been stunning. I highly recommend them to anyone searching for fast-growing shade/screen trees.