What temps kill sweet orange and citrus

[mthteh1916]

Charleston and Beaufort had lots of citrus trees in yards. Will this cold wave wipe them out?

[Cikas]

They can survive up to -7C with damage. Key Limes are the most sensitive citrus species and they can die at - 1/2C. 

Edited January 3, 2018 by Cikas

[Laaz]

Depends on the rootstock, but all will be fine except the lemons & limes. The fruit are no good now though.

 

[Silas_Sancona]

Would agree with Cikas.

Might add that the larger/ more mature the tree, the more likely it will come through, though it won't be pretty.

 My grandparents had a large sweet Orange that survived 19f in 1990 back in San Jose CA. And numerous, far less severe cold spells since. Add Meyer lemon to that list as well ( at least the mid 20s) albeit with damage.  Believe the Orange I mentioned was planted in the early 70s, years before I was born and saw the extremely rare snowfall event that took place there in 1976. 

Just remember don't remove any damage until winter has passed.. Hoping for the best for everyone back there. 

[TexasColdHardyPalms]

I have some lemons that are good to nearly 12F.  I think they are Ichang or something like that and make HUGE lemons that taste really good.