Information About Cranesbill Geraniums

Information About Cranesbill Geraniums

Get Started

Tuberous Geranium Plants: How To Grow A Tuberous Cranesbill Flower

By Mary H. Dyer, Credentialed Garden Writer

What are tuberous geranium plants? And, what is a tuberous cranesbill? How are they different from the familiar geranium we all know and love? Click on the following article to find out more about how they differ and get tips on planting tuberous geraniums.

What Is Carolina Geranium – Tips On Growing Carolina Cranesbill

By Darcy Larum, Landscape Designer

Carolina geranium was used for hundreds of years by Native American tribes as a valuable medicinal herb. What is Carolina geranium? Click this article for the answer, as well as tips on growing Carolina cranesbill in the garden.

How to Grow Hardy Geraniums

With many varieties derived from several different species, hardy geraniums vary in their care needs, depending on the type you are planting. Generally speaking, though, hardy geraniums prefer well-drained, moderately rich soil. Most will do well in either full sun or part shade, but they like to be fairly dry—they can become prone to mildew if kept damp.

Plant hardy geraniums so that the crown of the plant is at ground level or slightly above. Planting too deep can prevent them from flowering. Cutting them back after flowering is complete often prompts a second bloom period later in the summer.

Hardy geraniums are relatively trouble-free plants. Slugs may attack young geranium plants, while mildew and rust can infest foliage, especially in partial shade and/or humid climates. Shearing back and disposing of the infected leaves will help.

Rozanne Is Versatile

As long as she’s outside in natural sunlight, Rozanne can grow in whatever space you choose for her.

Borders And Groundcover

Geranium Rozanne is naturally a perfect border plant, giving the garden a bold splash of blue right through the summer. Because of her dense habit, weeds have a hard job taking root in the same spot. She can spread to fill large spaces, so if you’d rather have gorgeous blue flowers than endless rounds of weeding, Rozanne is the plant for you!


Despite her sizeable nature, Rozanne takes well to being grown in patio containers and even hanging baskets and window boxes, spilling beautiful blue-flowered trailing stems over the sides. Examples of these can be seen at Foggy Bottom in The Bressingham Gardens.


Because of her robust constitution, energetic habit, low maintenance requirements and long flowering period, as well as her decorative beauty of course, Rozanne is perfect for mass plantings. She’s become popular among landscape designers, particularly in Germany. Adrian Bloom’s use of it spilling out of a Norfolk flint well in his 2000 Chelsea Flower Show garden and his famous River of Rozanne at the Bressingham Gardens, since replicated in Germany and the USA, demonstrate more artistic landscape possibilities. And of course, she’s perfect for keeping weeds at bay.

Cranesbill Geranium (Geranium)

Quick facts and care essentials

• Zones vary
• Full sun or partial shade must have afternoon shade in hot-summer climates
• Regular watering

Not to be confused with common garden geranium (Pelargonium,) the cranesbills include spreading, mounding, and upright plants that make beautiful additions to the summer garden.

Flowers are five petaled, often in shades of rose, blue, and purple a few varieties have pure pink or white blooms. Beaklike fruits follow the flowers, hence the common name “cranesbill.” Leaves are roundish or kidney shaped, shallowly or deeply lobed.

One excellent choice is G. endressii (Zones 1-9, 14-24, 31-43), a 1- to 1 1/2 footer that blooms from late spring to fall (to early summer in hotter regions) its variety ‘Wargrave Pink’, with salmon pink blooms, is most widely grown. Also popular is G. sanguineum (Zones 1-9, 14-24, 30-43), a spreading, trailing plant to 11/2 feet high, 2 feet across, with deep purple blooms from late spring into summer.

Cranesbills grow best in cool- and mild-summer regions, where they will tolerate full sun or light shade. Where summers are hot, provide afternoon shade. Give moist, well-drained soil. Clumps can be left in place for many years before blooming declines due to crowding when this happens, divide in early spring.

Watch the video: Geranium Varieties A to Z