We are looking at starting a vineyard in central Montana and will be experimenting with Marquette, Frontenac, Sabrevois and several whites but with our shorter growing season I am not sure they will ripen consistently. My understanding is that we have approx. 2100 gdd here. So, I would like to also experiment with lesser known varieties such as Baltica, etc. Thus, I am looking for sources for these lesser planted vines.