There is a list somewhere, that has been compiled, but I cannot find it. We all have our favorites, but a lot of the same names keep coming up, year after year, which suggest that they are indeed reliable. Here are some places to look.

The Google search got better results than the GW search engine.

-Babka

Last year I bought approx 10 plants from Crownsville Nursery (formerly Bridgewood Gardens) during their annual late season Ugly Plant Sale. Crownsville is a little different in that they ship their plants in 3.5 inch pots, rather than bare root. All of the plants were good sized, healthy, with good root systems, and nothing "ugly" about them. I was well pleased. I want to try Chris/Hallson next, and possibly Green Mountain.

Made in the Shade Gardens

Steve inMassachusetts discussion This is from 2011 and some places mentioned may not be in business and the weather data is certainly dated, but Steve goes into great detail about several online vendors and gives great insight into the advantages and specialties of many online hosta vendors.

Jon

It also sort of depends on which hosta(s) you want to buy. Many vendors are already sold out of some varieties. I really wanted to bundle buy a couple different hostas and it took me quite a while to find one vendor who had all of the ones I wanted so I could save on shipping.

My most recent purchase was from Hosta Farm. I was pleased. I also looked at Naylor Creek, Carolyns Shade Gardens, and Hosta Guy.

I've had very good experiences from Hallson Gardens, Green Mountain, Bridgewood Gardens, Sebright Gardens and New Hampshire Hostas.