What flower stays in bloom the longest?
Sneezeweed. Yellow sneezeweed is the longest-blooming variety of its species. There are many varieties of sneezeweed, but this yellow sneezeweed is the longest-blooming of them all. Providing a burst of summer color from spring through to fall, you won’t be disappointed with this choice. 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.
What flower has the shortest bloom?
True to their name, dayflowers (Commelina species) produce flowers lasting precisely one day. 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.