Stages of Flowering

Still lots of work to do but at the moment, we are waiting for the vineyard to flower. It takes approximately 60 days from budbreak to flowering, or anthesis. For us that will be around July 6, which seems really late. We do have a week of warm weather coming up so hopefully the flowers will bloom a little earlier.
I frequently refer to Ed Hellman's chart of grapevine principle growth stages, in the online publication Grapevine Structure and Function.
Here is a timeline of how the flowers look during the various stages until flowering:

Stage	Example
Principal Growth Stage 1: Leaf development. Stage 13. 3 leaves unfolded. May 14, 2018
Principal Growth Stage 1: Leaf development. Stage 15. More leaves unfolded. May 28, 2018
Principal growth stage 5: Inflorescence emerge. Inflorescences fully developed; flowers separating. June 12, 2018

If flowering is going to occur approximately on July 6 this year, we have a few more weeks to go.