The plants often called "geraniums" in fact belong in the genus Pelargonium. While both genera are members of the geranium family (Geraniaceae), the true geraniums are a very different group of over 300 species of perennials and subshrubs that are at times evergreen, and are widespread in the temperate zones. Their often finely hairy leaves are usually hand-shaped, with toothed lobes. They bloom is spring and summer and have simple, flat, 5-petalled flowers in pink or purple-blue shades, less often white or darker purpose-black. The plant's common name, cranesbill, is attributed to the shape of its long narrow fruits, which somewhat resemble a crane's long beak. The genus name Geranium is derived from the Greek word geranos (crane).
CULTIVATION
Most species are hardy and will grow in a wide range of conditions, preferring sun or semi-shade and moist humus-rich soil. The roots can be invasive. Geraniums are appealing as ground covers, in rockeries, and as part of flower borders. Propagate by division or from cuttings or seed; these plants may self-sow.
Top Tip
Easily divided, geraniums can be used to fill any bare patches in the garden. They can quickly fill an area, and may need to be thinned out and pruned to maintain a tidy appearance.
CULTIVATION
Most species are hardy and will grow in a wide range of conditions, preferring sun or semi-shade and moist humus-rich soil. The roots can be invasive. Geraniums are appealing as ground covers, in rockeries, and as part of flower borders. Propagate by division or from cuttings or seed; these plants may self-sow.
Top Tip
Easily divided, geraniums can be used to fill any bare patches in the garden. They can quickly fill an area, and may need to be thinned out and pruned to maintain a tidy appearance.
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