What is the longest flowering hardy perennial?
Geranium. Probably one of the longest flowering garden plants, hardy geraniums start flowering around May, and continue to October, depending on the variety. One of the longest flowering varieties is Geranium ‘Johnson’s blue’ (illustrated) which is also attractive to bees. Butterfly bush have one of the longest bloom times of all garden plants: they seem to never be without flowers from early summer through autumn. This makes them perhaps better called “continuous bloomers” over rebloomers, since they don’t really take a break like other plants on this list do.
What is the longest flowering hardy geranium?
Description. Rozanne’ carries masses of large, vivid violet-blue saucer-like flowers with distinct white centres and star-like reddish-purple veins over spreading mounds of dark green foliage. This is the longest flowering Geranium we know, lasting all summer into the autumn. Geranium Rozanne (Cranesbill) Geranium Rozanne is an exceptional and unmatched perennial with an extended flowering period.
Are geranium flowers perennials?
Geranium is a genus of 422 species of annual, biennial, and perennial plants that are commonly known as geraniums or cranesbills. They are from the same family but have different genus. Geraniums are herbaceous perennials, and pelargoniums are annual plants for many. Once they have finished with their display of colour these are replaced by other flowering plants.