Yeah I'm watering regularly with a drip system. The ground is PH 7.Are they getting enough water and nutrients? I see your in the same neck of the woods as @NorCal. Perhaps he can chime in here.
Well I planted them under the partial shade of a tree- so yes they have partial access to the afternoon sun. They get partial/dappled sunlight from the morning to noon/1 o'clock, and fairly direct sunlight from 1-ish until sundown.The first words out of my mouth was shatter as well. How’s the canopy cover? Are the grapes exposed to the afternoon sun?
Thank you! Currently looking into Shatter- it's a busy weekend though!I think it is shatter also. a heavy rain when cluster is flowering will cause problems with pollination and subsequently cluster develop as yours.
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