Secondary clusters vs primary

[wood1954]

Here’s what my Marquette grapes look like, I’m really worried the secondary clusters won’t ripen.
Im a little west of Green Bay.

 

[wood1954]

Turns out all is well. I just tested the grapes and the primary clusters are at 16 Brix and the secondary clusters are at 15 Brix. Looks like by harvest time I can do one harvest, I was worried I would have to do two harvests.

 

[Vern]

Turns out all is well. I just tested the grapes and the primary clusters are at 16 Brix and the secondary clusters are at 15 Brix. Looks like by harvest time I can do one harvest, I was worried I would have to do two harvests.

I just finished harvesting my frontenac blanc, which froze bad. Primary were 27 brix and secondaries were 20 brix. After pressing juice was 22 brix. Probably should have done 2 pickings. I am glad yours are very close. Hopefully my marquette are like yours.