We had nice warm weather in April and early May that brough the buds out a bit ahead of what I believe would be normal (May 15-20th) but then we got hit with some late spring cooling. We even had snow last week and I had to cover the vines.
The warmth has come back a bit this week and this is the third year for these vines and the St. Croix is doing excellent and has sent out shouts with multiple flower clusters on nearly every bud. On many of the nodes both primary and secondary buds have sent out shoots and both have nice flower clusters - I've heard that this variety can be over fruitful. Here are the pictures of the St. Croix taken today. We have 6 St. Croix vines here, 4 are well situated in a sunny location and 2 are partially shaded. What is interesting is that the buds on the vines that are shaded are significantly less fruitful. Plant these vines in the best sun location you have. Here is a picture of one of the St. Croix vines tacked up to the fence again followed by a picture of the emerging flower cluster.
The Edelweise is also doing well and has got flower cluster on it as well. Again we lay the canes on the ground now and this seems to be enough winter protection for these varieties here. Here is a picture of the Edelwiese and flower cluster emerging.