Hymenachne

Hymenachne amplexicaulis and Hymenachne calamitosa
hymenachne_1_-_hymenachne.jpg

Weed profile

  • Perennial
  • Grass
  • Weeds of National Significance (WoNS)
  • Habitat: wetlands

Impact

Invades tropical wetlands. National ban on sale.

Description

  • Perennial aquatic grass to 3 m tall.
  • Stems thick and creeping, forming roots at the joints.
  • Leaves to 45 cm long with broad bases clasping around the stem.
  • Seed-head dense and spike-like, to 50 cm long.

Control options

  • chemical control

    glyphosate (450g/L)

    When: Spot spray, actively growing

    Where: Conservation areas, bushland and other non-crop areas.

glyphosate (450g/L)

Application Method: Spot spray

Application Rate: 1L/100L

Product Name: Roundup CT®

Herbicide Group: 9

Situation: Conservation areas, bushland and other non-crop areas.

Timing: Spot spray, actively growing

Comments: Non selective, avoid contact with desirable plants.

Legal Status: PER 13371 (exp. 2027)

Legal requirements in each region

To find out which landscape region you're in visit the NatureMaps website.
Alinytjara Wiluṟara
Eyre Peninsula
Green Adelaide
Hills and Fleurieu
Kangaroo Island
Limestone Coast
Murraylands and Riverland
Northern and Yorke
South Australian Arid Lands