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Onosma Genus

Donkey plant

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General Needs

  • LightFull sun
  • HardinessFrost hardy (min -5°C)
  • SoilWell drained, Gritty
  • WaterSemi-moist


Onosma genus (Donkey plant). There are about 40 species of semi-evergreen biennials, perennials and subshrubs, they will produce pendent, tubular flowers. They will produce densely tufted leaves with prickly hairs. They are fully to frost hardy and will require full sun with well drained soil. Propagation is by softwood cuttings in the summer or by seed in the autumn.


Perennials or Biennials, Shrubs


Mediterranean to Turkey

Interest and use

Is suitable for rock gardens and banks. Grown for their long, pendent, tubular flowers.


They are moderately frost hardy, they will need full sun this is essential, They will prefer well-drained soil and will dislike wet summers. They can be propagated from cuttings in summer or from seed in autumn.


Softwood cuttings in summer or by seed in autumn.

Pests, diseases or disorders

Prone to aphids or whitefly under glass.

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