Raintree sells them.... Here is a link that might be useful: Raintree Nursery

You can also check with Cherry Creek Tree Farms or Picadilly Nursery in Brighton if you want to go local. Dave Rock (Jr.) and Lisa at Picadilly have been very helpful to me. Be sure to ask about the replacement policy. I had to purchase a starter amendment and fertilizer from Picadilly to get the warranty on 2 trees I purchased in April. I'm generally not a fan of that. However I have to say that these trees have started better than any I have planted on my own, so it's something to consider. I got such a good deal on the trees, less than half price, so I just did it. Dan's right about the borers. The nursery staff may be able to steer you towards something less disease prone and more hardy here. Good luck!

What a haul you got Pat...Daisyme outdid herself. I got a box full of delicious items today from Texas Fern.Pat thank you so much for all the goodies. I have already used some of the metallic gold tiles. I am in love with the seahorses and all the ceramic fruit. The chandelier prisms are to die for. The marble and unglazed tiles will be in a project very soon...I am already thinking and thanks for the vitreous tile and especially the tiny red ones. Red is so hard to find. I think you put this box of tess together so thoughtfully, thank you very much. I love it. Here is a link that might be useful: Tess exchange from Texas Fern

I know this is an old post but check out www.mosaictraderUSA.com. They organize their site by size and offer a wide variety, FYI.