Further in the growing cycle, the grapes will change color to dark purple, Veraison, and will develop high sugar levels while the acidity decreases. Last year, we had Veraison in the 3rd week of July. This year it looks like we are a bit ahead.
We are now using soil moisture measurements at different locations in the vineyard to manage the irrigation.
Coastal fogs enter the Temecula valley from the ocean, but because of our altitude (1800 ft) this moist air does not reach the vineyard. Pressure from fungus like white powdery mildew has been relatively low.
As a result, there was no need to spray with sulfur this year.