Origin: Africa, Australia, Eurasia
Regional Pest Management Plan (RPMP) status
- Aotea — Eradication
- Hauraki Gulf Controlled Area Notice pest
Emergent, perennial aquatic herb < 1 m tall. Leaves are basal, < 10 x 20 cm and broad ovate, with a long petiole. Flowers are pale lilac/pink/red/white and borne on large, multi-branched panicles in summer. Achenes are held in a dense circular head and produced in summer-autumn.
What you need to know
To help protect our environment:
- You must not breed, distribute, release or sell water plantain on Aotea/Great Barrier Island group.
- You must not plant water plantain on Aotea/Great Barrier Island group.
Auckland Council will control water plantain at all sites within the Aotea/Great Barrier Island group where it is known to occur.
If you see water plantain anywhere on Aotea/Great Barrier Island group, please report it to Auckland Council at email@example.com.
Still or slow-moving water body margins, wetlands.
Seeds dispersed by waterfowl and water movement.
Impact on environment
Potential to displace native species. Impedes water flow and traps debris, causing silt build-up. May exacerbate flooding.
Consider engaging an aquatic pest plant control operator. Contact Auckland Council for control options.
Do not attempt to undertake control of this species on Aotea/Great Barrier Island group. Please report to Auckland Council if seen on Aotea/Great Barrier Island group.
Method: Dig out.
Plant parts requiring disposal: All parts.
Disposal options: Remove to greenwaste or landfill.
Biocontrol is currently not available for this species.
Community agrichemical control recommendations
Certified Handler/Experienced agrichemical user: Foliar spray of 100 ml glyphosate green per 10 L of water.
Caution: When using any herbicide or pesticide please read the label thoroughly to ensure that all instructions and safety requirements are followed.