Geranium 'Rozanne' forms spreading mat and flowers generously. The genus is native to Europe and Asia; this a natural hy-brid of G. wallichianum ‘Buxton’s Variety’ and G. himalayense 'Rozanne' is a trademarked name; the cultivar name is 'Gerwat'. Although White Flower Farm rates Rozanne for zones 5-8, I’ve been growing this geranium for years in So California. Rozanne geranium is a sterile hybrid and doesn’t produce seeds, but its heritage includes other cranesbill geraniums. There aren’t many hardy geraniums that will bloom year after year in S CA. The moniker hails from the Greek, where geranium means crane. Native Geranium traversii is from the Chatham Islands. The greatest number of ornamental species are native to Europe and South Africa. It is hardy in zones 4 to 8. The cranesbill reference is to the geranium seed capsule, which has a long beak-like column. The fairly new hardy geranium ‘Rozanne’ spreads into a mass of long-blooming blue flowers with a white eye. It looks similar to the popular ‘Ann Folkard,’ but isn’t quite so rambunctious. Rozanne' is the best everblooming blue flowered Geranium currently in cultivation. Origins: G. Rozanne is the result of an accidental cross in 1989 in Somerset, UK, between early-flowering G. himalayense and the later- and freely-flowering G. wallichianum ‘Buxton’s Variety’. Geranium ‘Rozanne’ is a patented sterile hybrid offering many great im-provements over other cultivars (U. S. Plant Patent PP12175 issued October 30, 2001). Geranium 'Rozanne'. Our most popular Geranium. This is an easy, carefree geranium; a strong grower with a sprawling habit like 'Dilys'. Geranium ‘Rozanne’ bears striking deep purple flowers in contrast with mid-green foliage, for months on end. Geranium Rozanne; Geranium Rozanne. 3 of 7 IVA WAGNEROVA/123RF. A vigorous grower, the large blue flowers are a delight and cover the plant all summer. The finely cut foliage is accented by large (for a geranium) blue-purple flowers with pale blue eyes which cover the plant from early summer to frost. It does very well for me, as long as I give it afternoon shade, and plenty of water. Suitable for sun or shade. Adrian Bloom extols the virtues of Geranium Rozanne. It’s perfect for using as ground cover at the front of borders. Renowned for its extremely long, all-season bloom, this vigorous perennial forms a broadly spreading mound of deep green, dissected foliage. Geranium 'Rozanne' PP12175 cranesbill . 4 of 7 AUCKLAND BOTANIC GARDENS. Both parents are native to the Himalayas. Easy to grow, Geranium ‘Rozanne’ is tolerant of most conditions except waterlogged soil. Rozanne geranium was discovered in a home garden in Somerset, England. Native Area: Himalayas USDA Growing Zones: 4–9 Height: 12–20 inches Sun Exposure: Full sun to part shade 02 of 16 'Rozanne' (Geranium 'Gerwat' ROZANNE') Joshua McCullough / Getty Images 'Rozanne' is a hybrid geranium cultivar that was named the 2008 Perennial Plant of the Year. Large, violet blue flowers with a lighter eye are produced prolifically until frost. Geranium is a genus of 422 species of annual, biennial, and perennial plants that are commonly known as geraniums or cranesbills.They are found throughout the temperate regions of the world and the mountains of the tropics, but mostly in the eastern part of the Mediterranean region.. The palmately cleft leaves are broadly circular in form. Deadhead spent blooms regularly to prolong flowering. Cover at the front of borders beak-like column it ’ S perfect for using as ground cover at front! Conditions except waterlogged soil it ’ S perfect for using as ground cover at the front of borders cover plant! 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