What is the longest flowering perennial in the UK?
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 flower for September and October?
September: aster and morning glory. October: marigold and cosmos. November: chrysanthemum. December: narcissus and holly. Yes, December indeed has two birth month flowers, which are the holly and narcissus. These two flowers are associated with the month of December, with holly representing festive celebrations and narcissus symbolising hope and renewal after the winter season.