I saw that big orange Cym in a show 2 weeks after the freeze... those flowers not only survived, but were show-quality.
Citrus is grown in areas that mostly warm, with winters where frost is fairly rare but does happen (like inland southern California, and in Florida). The fruit is damaged by frost, so the growers have various techniques to protect the crop. Up until mid-20th century, they'd burn crude oil and similar dirty fuels to get a coating of soot over the fruit...black absorbs heat, also a rather thin insulating layer, and the burning also produces some heat. (Look up "smudge pot" ). Of course those made life miserable for the people leaving nearby, and they were eventually outlawed. Newer approaches include wind machines (keep the air moving to help prevent frost from settling on the fruit), gas orchard heaters, and also the low flow water approach. The trees will survive the fost, but of course it's the fruit that's sold.
Last edited by Roberta; 10-08-2023 at 07:20 PM..
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