The incidence of vertigo has been reported to be as high as 1.5% in the general population and some reports suggest that more than 5% of adults experience some kind of vertigo each year. In 80% of affected individuals, this symptom resulted in a medical consultation, interruption of daily activities, or sick leave.
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..
Use a pair of hand clippers to cut the foliage back to the base of the geranium, leaving any fresh green growth in place. Prune perennial geraniums 2 or 3 inches above soil level after it dies back, which can occur anywhere from late summer to early winter, depending on your climate and variety.