I have had great success at overwintering geraniums in my Southern window in Michigan,
I have two large, beautiful geraniums, for 38 years, now, that I put outside in Summer and bring in for Fall/Winter Seasons. I just make sure they don't bring in little bugs with them. I spray with insecticidal soap beforehand and deadhead and check the soil.
I have had great success at overwintering geraniums in my Southern window in Michigan,
I have two large, beautiful geraniums, for 38 years, now, that I put outside in Summer and bring in for Fall/Winter Seasons. I just make sure they don't bring in little bugs with them. I spray with insecticidal soap beforehand and deadhead and check the soil.