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Green Cestrum

Botanical Name Cestrum parqui
Family Solanaceae
Origin Warm temperate South America

Identification

Perennial shrub, usually 1 to 2 metres with offensive smelling leaves. Flowers greenish-yellow, tubular, with five small petals, and are borne in loose clusters at the ends of the branches. Flowers fragrant at night, but offensive smelling by day.

Habitats

Waste areas, and stream banks where it has escaped from gardens.

Impact to Biota and Ecosystems

Grows in dense masses, crowding out other species. The species is noted for its extreme toxicity to farm animals including cattle, sheep, horses, pigs and poultry. Numerous animals have been killed when they have gained access and browsed plants.

Dispersal Routes, Vectors, Infestation Sources

Usually spread by planting in gardens. Seeds may be spread by birds, or water, and pieces cut roots spread on machinery may establish new colonies.

Management

Physical Control

Practicable with small infestations. Cut down, dig out stumps and roots completely and burn.

Further Comment

Stock death resulting from eating cestrum has been reported. For more information on the poisonous properties of Cestrum please refer to Bay of Plenty Regional Council's Fact Sheet on Poisonous Plants.