Also known as:
Broadleaf cattail, common cattail, giant reedmace
Origin: Africa, Eurasia, North and South America
Regional Pest Management Plan (RPMP) status
- Whole region — Eradication
- National Pest Plant Accord Species
Perennial aquatic reed, < 3 m tall. Rhizomes form a thick mat. Leaves are wide, flat, stiff and pale grey/green. Flowers are borne in erect, sausage-shaped, dark brown/black inflorescences. Fruit is tufted and appears in early summer.
What you need to know
To help protect our environment:
- you must not breed, distribute, release or sell great reedmace. As great reedmace is a National Pest Plant Accord species, these restrictions apply within the Auckland region and across the whole of New Zealand
- you must not plant great reedmace within the Auckland region.
Auckland Council will control great reedmace at all sites where it is known to occur.
If you see great reedmace anywhere in the Auckland region, please report it to Auckland Council at firstname.lastname@example.org.
Wetlands, water bodies and margins < 1 m deep.
Seeds dispersed by wind, water and animals. Vegetative spread from rhizomes. Human-mediated dispersal through contaminated machinery.
Impact on environment
Forms dense thickets, suppressing native vegetation and altering flow regimes. Potential to directly compete or hybridise with threatened taonga species raupō.
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.