GDD base 50 accumulation since April 1 = 8. http://agebb.missouri.edu/weather/reports/gddTable.asp
Phenology stages according to the Modified E-L system http://door.uwex.edu/files/2010/10/ModifiedEichhornLorennzsystem.pdf
N Norton E-L Stage 2 – 3 Bud scales opening to Wooly bud +- green showing Bud scales opening
G Norton E-L Stage 2 – 3 Bud scales opening to Wooly bud +- green showing
G Cabernet Sauvignon E-L Stage 2 Bud scales opening
MVEC Delaware E-L Stage 3 Wooly bud +- green showing
MVEC Valvin Muscat E-L Stage 2 – 3 Bud scales opening to Wooly bud +- green showing
MVEC Sunbelt E-L Stage 3 – 4 Wooly bud +- green showing to Budburst, leaf tips visible
MVEC Chambourcin E-L Stage 2 – 3 Bud scales opening to Wooly bud +- green showing
W Catawba E-L Stage 2 – 3 Bud scales opening to Wooly bud +- green showing
NWV Arandel E-L Stage 3 – 4 Wooly bud +- green showing to Budburst, leaf tips visible
NWV Aromella E-L Stage 3 – 4 Wooly bud +- green showing to Budburst, leaf tips visible
R Seyval Blanc E-L Stage 4 Budburst, leaf tips visible
R Catawba E-L Stage 3 – 4 Wooly bud +- green showing to Budburst, leaf tips visible
F Vignoles E-L Stage 2 – 3 Bud scales opening to Wooly bud +- green showing
F Chardonel E-L Stage 3 Wooly bud +- green showing
F Traminette E-L Stage 2 – 3 Bud scales opening to Wooly bud +- green showing
F Cayuga White E-L Stage 3 – 4 Wooly bud +- green showing to Budburst, leaf tips visible
D Concord E-L Stage 3 – 4 Wooly bud +- green showing to Budburst, leaf tips visible
D Vivant E-L Stage 3 Wooly bud +- green showing
D Vidal Blanc E-L Stage 2 – 3 Bud scales opening to Wooly bud +- green showing
D Mars E-L Stage 3 Wooly bud +- green showing