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Geraniums are a popular indoor and outdoor plant. This NebGuide describes how to care for them, including overwintering and treating for diseases.
There are two different groups of plants known as geraniums. The showy, flowering geraniums, normally grown as indoor and outdoor plants in Nebraska, are members of the genus 'Pelargonium.' They are subtropical in origin and are treated as annuals in Nebraska, since they do not overwinter outdoors.
Members of the genus 'Geranium,' which are winter hardy outdoor plants, are usually called the 'hardy geraniums' or cranebills. They are good additions to the perennial landscape border. Hardy geraniums are often grown as much for their decorative foliage as for their flowers. This NebGuide provides information about the Pelargonium geraniums.