By: Samantha Yurek
Photo Credit: Wikipedia
This geranium blooms a bright magenta in the summer, but turns a crimson in the fall, which is where the name Bloody Cranesbill was derived from. A herbaceous perennial with fern-like leaves, this variety of geranium enjoys full sun and well-drained soils with low nutritional value. Although native to Europe, this plant is far from invasive and makes for great green roof ground cover. The hardiness zones for this plant are 3-8.
This is a green roof plant that can be seeded right now! The geranium is best sowed between November and March.
These plants are easy to expand on your rooftop garden by cloning. Cloning can be completed in several ways. Cuttings are a practical and inexpensive way to expand the plant cover on any rooftop garden.
- Stem cuttings: in which a piece of stem is part buried in the soil, including at least one leaf node. The cutting is able to produce new roots, usually at the node.
- Root cuttings: in which a section of root is buried just below the soil surface, and produces new shoots
These cuttings should then be buried in the green roof growing media or spread under a pre-vegetated mat.