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Do Warmer Winters Mean Less Fruit?

Do Warmer Winters Mean Less Fruit?

Californians have been enjoying summer weather in the dead of winter, but the downside is that unseasonably warm temperatures could threaten many of our favorite foods. The state experienced its warmest winter on record last year, and according to current reports, this year could shape up to be another record breaker, compounded by a four-year drought.

California produces the vast majority of our country’s fruits and nuts, and farmers are worried because they depend on water and winter chill for their trees to produce.

The drought has been a top concern for Stan Devoto at Devoto Garden & Orchards, who grows nearly 100 heirloom varieties of apples in Sebastopol. Many of his trees are dry-farmed, meaning they receive no irrigation besides what falls from the sky and is stored in the soil. His farm has received about 27 inches of rain this season (compared to the usual 40 to 50).

Right now, though, Stan is more concerned about the lack of cold than he is about the drought. “We don’t anticipate a good crop this year unless we start getting some really cold temperatures,” he says. “During winter we sometimes get down into the mid to low twenties, but this year there’s been no frost on the roofs, no frost on the grass. It’s scary.”

The Big Sleep

Winter chill is a vital part of the annual cycle of most fruit trees, including stone fruit (cherries, apricots, plums, and the like), pome fruit (such as apples and pears), and nuts. To bear fruit each year, the trees must undergo a period of winter dormancy, when the tree essentially goes to sleep, dropping its leaves and slowing its metabolism to conserve energy and protect itself from the cold.

 

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