Those that are actively growing or flowering are at high risk.
VOA: special.2010.01.12
In the best of the older vintages, like 1961, 1959, 1947 and 1945, yields were very limited due to drought conditions or poor flowering, and the resulting wines are unforgettable, so complex and captivating that the room went silent for minutes as we all marveled at the kaleidoscopic aromas and flavors in the glass.
Expect to associate the name with a theme song, a slogan, and--in all likelihood--images of women or children running happily through flowering spring meadows.
On a later reciprocal visit, Lee in turn saw, to no surprise, that China was similarly flowering--only by an order or two of magnitude, on a Chinese scale.