Which perennial has the longest bloom time?
Rozanne® Cranesbill. Known as the Geranium of the Millennium, Rozanne® cranesbill can bloom for over 3 months, filling your garden with flowers all season long. The 2008 perennial of the year, Rozanne has long been proven to keep your garden flowering for as long as possible. Geranium or Pelargonium? Plants known as geraniums actually fall into two separate botanical groups. The true geraniums are the perennial types. The geraniums that most people think of when they’re out shopping for plants are the annual bedding types with lollipop-like flowers: a ball of blooms on a stick stem.Geranium is a genus of 422 species of annual, biennial, and perennial plants that are commonly known as geraniums or cranesbills.Geraniums will grow in sun or partial/light shade and will grow in all soils except wet or boggy sites. Growing Geraniums is easy, and I classify them as green wheelbarrow, one of the easiest of plants to grow. Geraniums are undemanding, will return and flower each year and do not need feeding.The plant’s blooms come in shades of pink, purple, blue, and white, and often have deeper-colored veins radiating from the center of each blossom. Most perennial geraniums bloom in early to late spring and continue to bloom through midsummer, but some varieties also bloom into fall.