The genus Geranium includes 422 species of flowering plants found in temperate and mountainous regions in the tropics. The plant is also known as "cranesbill" because the seeds have the same shape as the bill of a crane.
Geranium and Pelargonium can be told apart by looking at their flowers, as Geranium has symmetrical flowers and Pelargonium has irregular petals. The subject of this monograph is Geranium species.
Historically, all parts of the Geranium plant were used by Native Americans to treat diarrhea, bleeding, and swelling. It has also been used in perfumes and soaps.
Geranium has been studied for its antibacterial properties and as a mosquito repellent. However, there are conflicting results.

Related Terms

3-Beta-caffeoyl-12-oleanen-28-oic acid, A-type proanthocyanidins, baby keeper cream, catechins, citronellol, citrosa plant, condensed tannins, cranesbill, epiafzelechin-(4beta-->8,2beta-->O-->7)-afzelechin (geranin A), epicatechin-(4beta-->8,2beta-->O-->7)-afzelechin (geranin B), flavonoids, Geraniaceae, Geranium incanum Burm., Geranium maculatum, Geranium nepalense, Geranium nepalense Sweet, Geranium niveum, geranium oil, Geranium robertianum, Geranium sanguineum L., Geranium sibiricum Linné, Geranium strictipes, Geranium sylvaticum, Geranium thunbergii, Geranium thunbergii Siebold ex Lindl. & Paxton,Geranium wallichianum, Geranium wallichianum D.Don ex Sweet, hyperin, isomenthone, linalool, mahuannin B, methyl gallate, plant volatile oils, polyphenolic acid, polyphenolic complex PC, proanthocyanidins, reynoutrin, rose geranium.
Note: Geranium is the common name for two genera, Geranium and Pelargonium, both of which are used as herbal supplements. This monograph discusses evidence regarding the use of the Geranium genus. However, many published papers do not mention genus of geranium used, which increases confusion in the field. A number of preclinical and clinical trials have studied the effects of Pelargonium.

evidence table

These uses have been tested in humans or animals. Safety and effectiveness have not always been proven. Some of these conditions are potentially serious, and should be evaluated by a qualified healthcare provider.
Insect repellent (Grade: C)
Geraniums are garden plants commonly used to repel mosquitoes. Some studies looked at the effects of geranium essential oil when applied to the skin. However, the results were unclear, and further research is required.