Q.How cold can it get for coleus to survive outside
Do I have to cover if a possible freeze is coming?
theficuswrangler
Answered on November 19, 2014
Coleus are damaged by temperatures under 50F. This is why they are considered annual plants anywhere north of the tropics. You can cover them, but because they are so inexpensive and plentiful, most people consider freeze protection for them just too much trouble. This article has more information: https://www.gardeningknowhow.com/ornamental/foliage/coleus/coleus-plant-care.htm
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