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Jul 24, 2016 8:12 AM CST
What is the lowest temp in which an oleander can survive? We had them in California, so I know their heat tolerance is amazing. But, where I live in Colorado, on rare occasions, we reach below zero.
Name: Tara
NE, Florida (Zone 9a)
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Jul 24, 2016 9:05 AM CST
Welcome! AutismMom to NGA
Sorry, they probably won't do well... Oleander (Nerium oleander)

edited to add...Taken from database... Minimum cold hardiness: Zone 9b -3.9 °C (25 °F) to -1.1 °C (30 °F)
[Last edited by terrafirma - Jul 24, 2016 11:16 AM (+)]
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Name: Sue
Ontario, Canada (Zone 4a)
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Jul 24, 2016 9:13 AM CST
I have one here in Zone 4 but it's in a pot that we bring into the basement for the winter. We've had it for many years. I think it will survive -5C (23F) but may be damaged at that temperature. That's my cut off temp for bringing it indoors. I'd expect much lower than that to be fatal. It is very easy to overwinter in the basement, if you have one. We keep it on the dry side. Dubious as a houseplant given its toxicity.
Name: Karen
NM , AZ (Zone 7b)
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Jul 24, 2016 11:11 AM CST
We've had them for years and they have survived in our yard down to 22 F.
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