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Noogoora Bur

Also known as:
Common Cockle Bur
North and South America

General description

Annual herb < 2.5 m tall. Taproot is shallow. Stems are blotchy purple and hairy. Leaves are large and serrated, with dark green tops and pale green undersides. Flowers are small and yellow. Burs are small, hard, brown, woody and hooked.

What you need to know

To help protect our environment:

  • You must not breed, distribute, release or sell noogoora bur within the Auckland region.
  • You must not plant noogoora bur within the Auckland region.
Auckland Council will manage noogoora bur at all sites where it is known to occur.

If you see noogoora bur anywhere in the Auckland region, please report it to Auckland Council at

Pasture, cropland, plantations, wasteland, disturbed or open sites.

Seeds dispersed by water and attachment to animal pelts. Human-mediated dispersal through contamination of clothes and machinery.

Nuisance pest of pasture and crops, especially maize. Poisonous to livestock and hooked burs cause sores in livestock mouths and hooves.

Site Management

Recommended approaches

Do not attempt to undertake control of this species. Please report to Auckland Council.

CAUTION: When using any herbicide or pesticide please read the label thoroughly to ensure that all instructions and safety requirements are followed.

Similar species

bathurst bur
Xanthium spinosum

Bathurst bur's leaves are narrower and have three spines beneath each leaf.

Arctium minus

Burdock has small red purple flowers, the burs have many more smaller spines. The plant is a perennial.

RPMP status

Whole region (Progressive Containment, council delivered)
Hauraki Gulf Controlled Area Notice pest
Noogoora bur - Main species image