what temperature is too cold for geraniums
Temperature Thresholds. According to Protabase, geraniums grow well in the temperature range of 65 to 95 degrees F during the growing season, and in the winter low temperatures between 40 to 50 degrees F, according to the A-Z Encyclopedia of Garden Plants..eraniums (Pelargonium spp.) include any of over 250 different species of succulent, evergreen shrubby plants native to southern Africa. According to the A-Z Encyclopedia of Garden Plants, only 20 species are commonly used to create the many varieties planted in gardens.