1. The Magic Garden in upstate NY. magicgardenplants.com
2. Limerock Ornamental Grasses in Port Matilda, PA. limrockgrasses.com
3. Deer-Resistant Landscape Nursery in Clare, MI. deerxlandscape.com
4. Triple Brook Farm in CT. triplebrookfarm.com

I would order from each of them again, plus from an impressive west-of-the-Rockies nursery: Bluestem Nursery in BC. bluestem.ca

There are many others. You can join gardenwatchdog.com (free) and search for those nurseries that specialize in grassesÂand, important, see how they (and those listed above) are rated by their customers and get direct links to their sites. Ordering from nurseries east of the rockies will keep shipping costs down, since you live in PA. If you live near Blair & Bedford Counties, you can visit Spring Farm Greenhouses near MartinsburgÂgreat grass selection, huge pots, low prices.

Wow, thank you. I found gardenwatchdog. Great site! Since I posted I have gone to bluestem and limerock. I'll try the others. It's nice to have someone else's experience to fall back on!

Earthly Pursuits is the retail business for Kurt Bluemel Inc. Ran by Monika who is Kurts sister. I visited both and bought lots of Grasses from them last Fall. Very pleased with the plants and service.
Best Regards,
Anthony in TN.

If you are looking to buy in full flat quantities I would recommend Emerald Coast Growers in Florida. They are a wholesale operation but will sell to end users if you meet their minimum order requirements.