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Geranium Genus

Cranesbill

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General Needs

  • LightFull sun, Part shade or Shade
  • HardinessHalf hardy (min 0°C)
  • SoilWell drained, Sandy, Poor quality
  • Soil pH6.0 to 8.0
  • WaterSemi-moist

Description

Geranium genus (Cranesbill). There are about 300 species of annual, biennial and perennial geraniums, some of which are evergreen. The leaves are broadly circular in outline but usually palmately lobed. The flowers are small and showy and will bloom in pink, blue or purple.

Characteristics

Annuals, Perennials or Biennials, Evergreens, Fragrants

Other common names

Geranium

Interest and use

Grown for their attractive flowers and often as ground cover. Compact species are suitable for rock gardens. Suitable for coastal conditions.

Cultivation

They are fully to half hardy. Most species will prefer sun, but some do better in the shade. They will grow in any but waterlogged soil. Outdoors, grow larger species and hybrids in any moderately fertile, well-drained soil. Grow small species and hybrids in humus-rich, sharply drained soil in full sun. Under glass, grow half hardy species in loam-based potting compost with added sharp sand, in bright filtered light. During the growing season, water freely and apply a balanced liquid fertilizer monthly. Water sparingly in winter.

Propagation

You can propagate by semi-ripe cuttings in the summer, or by seeds or division in the autumn or spring. The cultivars should be propagated by division or cuttings only.

Pests, diseases or disorders

Vine weevil, slugs and mildew may be problematic.

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