Plants are usually marketed by florists, garden center and nurseries between Easter and Mother's Day. While the flowers and plants are more showy and spectacular than regular zonal geraniums, they suffer severely when growing conditions are more than 60 degrees F. during the day and less than 55 degrees F. at night.
Plants prefer bright, indirect light and a moist, well-drained soil.
Martha Washington geraniums are best enjoyed for as long as they bloom and then discarded.