Mandlvilla Was Frost Bitten
I purchased a red Mandevilla last fall at Lowe's and it has been doing great until about a week ago. I have been wintering it in the garage along with some other plants that I kept a heat light near. On nice days when the temperature outside would get over 70, I would put it out for the day in the sunlight. It was still growing great even though it was mostly confined indoors. Last week the temps were in the 70's during the day and 50's at night so I just left it out except one night the weatherman lied (imagine that!) and the temperature dipped to 29 degrees. I think the frost got to it, the leaves look like that have been frozen but not dropping off yet.
Should I cut it back or just keep an eye on it and hope for the best?