Orange Cestrum
Solanaceae - Cestrum auranticum

What does it look like?

Smelly shrub (up to 2m) with erect, hairless stems that become woody. Leaves (4-15 x 2-7 cm) are hairless and smell strongly when bruised. Orange, scentless, tubular flowers (20-25 mm) with petal margins bent backwards appear November-July and are followed by clusters of white berries (15 x 20 mm).

Why is it a problem?

Moderate to high shade tolerance, Orange centrum grows in fertile soils, damp and hot or cold conditions. Forms dense, shady masses, and produces many long-lived and widely-dispersed seeds. Poisonous and not grazed.

Forms dense stands in forest understory, preventing native species from establishing. Poisonous berries and rotting vegetation may affect native fauna.

Control Methods

Physical control

  • Pull or dig out plants all year round. Dry out and leave to rot.

Herbicide control

  • Cut and stump paint (all year round): cut trunk near to the ground, and swab freshly cut stump with 100ml Tordon BK per 1L water; or 100ml triclopyr (600g/L) per 1L water.
  • Overall spray (spring-summer) with 30 ml triclopyr (600g/L) + penetrant per 10L water.

CAUTION: When using any herbicide or pesticide, PLEASE READ THE LABEL THOROUGHLY to ensure that all instructions and safety requirements are followed.

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