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Thunbergia Genus

Black-eyed Susan

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General Needs

  • LightFull sun or Part shade
  • HardinessFrost tender (min 5°C)
  • SoilWell drained, Fertile
  • WaterSemi-moist

Description

Thunbergia genus (Black-eyed Susan). This genus consists of about 100 species of annuals or perennial twisting climbers and evergreen perennials. They are clump-forming shrubs with entire 5-lobes. The flowers are produce in cylindrical blooms which are borne individually from the leaf axis or in trusses.

Characteristics

Annuals or Perennials, Evergreens, Shrubs

Origin

Tropical & Southern Africa

Interest and use

Grown for their flowers.

Cultivation

They are half hardy to frost tender, min 10-15C. They will grow in any fertile, well drained soil with full sun or light shade in the summer. They will require support. Thin out crowded stems in early spring.

Propagation

You can propagate by seeds in the spring or by softwood or semi-ripe cuttings in the summer.

Pests, diseases or disorders

Red spider mites, whitefly and scale insects under glass.

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