We had tremendous growth in the last 10 days. Nearly all varieties have shoots 15"+, and many shoots are 24" or more.
It looks like Marquette, Frontenac, and Lacrescent will bear full crops. Foch will be at about 2/3 full crop due to grape flea beetle damage.
Prairie star will be about a half crop. Not due to any pest or frost damage, but because it is growing much more slowly, and the vines are far less mature than other cultivars . They were planted in 2007, and are taking a long time to establish. They are in the sandiest area of the vineyard, and the three year drought which started in 2007 didn't help.