Outdoor overnight temperature?
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Old 05-15-2020, 12:20 PM
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Outdoor overnight temperature? Male

Originally Posted by Roberta View Post
So maybe if you don't believe it when someone who does this for a living shows you, I guess you'll have to visit California. In the coastal band from San Diego to San Francisco, there are (and have been over the years) many commercial Cymbidium nurseries like this one, and among orchid hobbyists, Cyms. are about as common (and hard to grow) as roses. Even in the more inland areas where summer days are frequently over 100 deg F (nearly 40 deg C) and quite a few winter nights get down to freezing - these grow outside where few other orchids can. Nobody "reports" this, they just do it.
I did some online searching a moment ago, and noticed at least some sources mentioning frost can kill cymbidium.

Now - if that person can guarantee that all cymbidium will survive a freezing - regardless of actual conditions (eg. humidity, rate of freezing, and whatever), then that's fine. But if they don't guarantee it, then it's probably not right to say that cymbidium can handle a freezing all the time. This basically means - is there any risk? And will all growers take/accept that risk for their cymbidium.
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daytime, forward, mid, seedlings, temps

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