The lowest temperature for orange tree survival depends on the age and health of the tree. Older, established trees in good health withstand temperatures down to the low 20's. Protect tender, young trees by banking soil around the trunk during cold periods.
About this Author
Diane Watkins has been writing since 1984, with experience in newspaper, newsletter and web content. She writes two electronic newsletters and content around the web. Watkins has a Bachelor of Science degree in chemistry from Clemson University. She has taken graduate courses in biochemistry and education.