Variegated Thistle

  • Scientific Name: Silybum marianum

Variegated Thistle

Scientific Name:

Silybum marianum

What is Variegated Thistle?

Variegated thistle, blessed milkthistle, milkthistle (Silybum marianum) 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.

Variegated thistle is native to southern Europe and the Mediterranean. It was probably introduced as a medicinal plant or a contaminant of grain before its weed potential in WA was recognised. In WA it has become an important weed of the high and medium rainfall districts of the south west of the State. When established it competes with more useful pasture plants for light, moisture and nutrients. Under certain conditions, variegated thistle is poisonous. It can kill cattle and, occasionally, sheep, especially when hungry animals consume large quantities in the absence of alternative feed. It becomes more palatable to stock – and more toxic – when it has wilted after cutting.

It has numerous spines which may cause injury to animals, including domestic dogs. Variegated thistle is also an important contaminant of wool and the plant provides excellent cover for rabbits.

Variegated thistle is usually an annual plant but occasionally does not flower until the second year. A large plant may cover an area of over one metre in diameter. It reproduces only from seed.

PRODUCT SOLUTIONS FOR Variegated Thistle

Armoury Herbicide
Active: 150g/L Imazapry, 150g/L Glyphosate

Armoury Herbicide is the ideal knockdown and residual control of various annual and perennial weeds in non-crop, commercial, industrial, public ser...

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Unimaz Herbicide
Active: 250g/L Imazapyr

Unimaz is a long term residual, broad spectrum herbicide ideal for fence lines, rights of way, commercial and industrial areas. Unimaz is ideal for...

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Clear Up Bio 360 Herbicide
Active: 360g/L Glyphosate (IPA Salt)

Clear Up Bio 360 Bi-Aquatic is a non selective herbicide containing 360g/L of the active ingredient glyphosate present in the form of an ...

Pack:
QTY:
- +
$38.50
Exonerate Herbicide
Active: 200g/L Glufosinate-ammonium

EXONERATE is formulated as a convenient, easy to handle liquid and can be tank-mixed with other herbicides to assist in the speed of knockdown and ...

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Eraze 360 Biaquatic Herbicide
Active: 360g/L glyphosate

Eraze 360 Bi-Aquatic is a non-selective herbicide containing 360 g/L of the active ingredient glyphosate present in the form of an isopropylamine (...

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Simplex 500 SC Herbicide
Active: 500g/L Simazine

Simplex 500 SC is a pre and post-emergent herbicide containing 500 g/L of the active ingredient Simazine. Simplex 500 SC is registered for the...

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Roundup Bi-Active Herbicide
Active: 360g/L Glyphosate

Roundup Biactive is a non-selective herbicide that has been specifically formulated for use in environmentally sensitive areas, for control of a br...

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Victory IVM Herbicide
Active: 750g/kg Clopyralid

Victory® IVM Herbicide contains 750 g/kg clopyralid present in the form of potassium salt. The product is available in a WDG (WaterDispersible Gra...

Pack: 2kg
5kg
QTY:
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australian agribusiness

Nuturf is a division of Australian Agribusiness (Holdings) Pty Ltd ABN 61 135 355 958

 

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