While much of the crop was past the bloom stage, a significant portion was
still in bloom, according to Napa County Farm Advisor Ed Weber.
USA; Napa growers burnt by heat spike
Growers in Napa, already facing an estimated $5m loss in the Chardonnay crop to frost damage in April, have taken another hit from Mother Nature. Three days of extreme heat, with temperatures spiking at 102 degrees Fahrenheit hit the vineyards in late May, scorching the blooms on late flowering Merlot and Cabernet Sauvignon.