Tutsan: declared pest

Page last updated: Monday, 4 May 2020 - 2:51pm

Please note: This content may be out of date and is currently under review.

Tutsan (Hypericum androsaemum) is a declared pest in Western Australia (WA). This article describes the nature of the plant with links to requirements land owners/occupiers must adhere to and pest control methods.

Form: shrub — perennial

Status: not known to be present in WA, if found please report


An erect shrub, to 1.5 metres high, commonly about one metre, reproducing by seed.

Stems: Has severe reddish stems emerging from a woody crown or rootstock. They are thin with two opposite longitudinal ridges or wings.

Leaves: Green but containing a red pigment which is prominent in autumn, paler on the lower surface, hairless and arranged in opposite pairs. Ovate or oblong, 10 centimetres long, stem clasping, with minute oil glands on the lower surface. The oil gives the plant an aromatic smell when crushed.

Flowers: Yellow, two to three centimetres diameter, formed in small terminal clusters. Sepals persistent, unequal; petals five, sometimes with black dots along the margins. Styles three; stamens numerous in clusters of five.

Fruit: A globe shaped or slightly elongated capsule about eight millimetres in diameter that changes from green to red to black as it ripens.

Seed: Brown, numerous, one millimetre long with regular crosswise ridging.

Roots: Numerous shallow roots to 30 centimetres depth.

Agricultural and economic impact

An environmental weed.

Declared pest category

The Western Australian Organism List (WAOL) contains information on the area(s) in which this pest is declared and the control and keeping categories to which it has been assigned in Western Australia (WA). Search for tutsan in the WAOL using the scientific name Hypericum androsaemum.

Requirements for land owners/occupiers and other persons

Requirements for land owners/occupiers and other persons if this pest is found can be sourced through the declared plant requirements link.

Search > detect > report

MyPestGuide™ Reporter
via app or online
(Select 'Send report to MyWeedWatcher' from menu)

Pest and Disease Information Service (PaDIS)
+61 (0)8 9368 3080

Control method

Report the presence of this organism before undertaking a control measure. Control methods for this declared plant can be found through the tutsan control link.

Contact information

Pest and Disease Information Service (PaDIS)
+61 (0)8 9368 3080
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