Ground Covers and Grass Invaders

This page describes pest ground covers and grass invaders which are included in the Tasman-Nelson Resource Regional Pest Management Strategy.

A brochure containing the information on this page can be downloaded: Controlling Ground Cover and Grass Invaders

Ground Cover and Grass Invaders

As included in the Tasman-Nelson Regional Pest Management Strategy.

African Feather Grass

Pennisetum macrourum

Country of Origin: South America

Total Control Pest Plant

Remove: Small individual plants by grubbing. If seed heads are present bag the whole plants and dispose of in a landfill.

Foliar spray: 100 ml Glyphosate 360 and 10 ml penetrant/10 litre.

Note: If located, please contact a Biosecurity Officer, Ph 03 543 8400.

AfricanFeatherGrass

Chinese Pennisetum

Cenchrus purpurascens

Country of Origin: Asia

Progressive Control Pest Plant

Remove: Grub out small infestations. If seed heads are present bag the whole plants and dispose of in landfill.

Foliar spray: 100 ml Glyphosate 360 and 10 ml penetrant/10 litre.

 ChinesePennisetum

Kahili ginger

Hedychium gardnerianum
Country of Origin: South Africa
Progressive Control Pest Plant – Golden Bay to Kaiteriteri
Remove: Dig out all rhizomes. Dispose of rhizomes in landfill. Young seedlings
can be hand pulled but take care to remove strings of rhizomes.
Stump treatment: Cut above pink “collar” at base and paint stump with 1 gm
Metsulfuron-Methyl 600/1 litre or Vigilant® Herbicide Gel.
Foliar spray: 5 gm Metsulfuron-Methyl 600 and 20ml penetrant/10 litre.
NPPA Pest Plant

 KahiliGinger

Nassella Tussock

Nassella trichotoma

Country of Origin: South America

Progressive Control Pest Plant

Remove: Small individual plants by grubbing. If seed heads are present,  bag the whole plants and dispose of in landfill.

Foliar spray: 150 ml Glyphosate 360 and 10 ml penetrant/10 litre.

NPPA Pest Plant

 NassellaTussock

Purple Pampas

Cortaderia jubata

Country of Origin: South America

Containment Pest Plant

Remove: Grub out seedlings and young plants. Large plants can be dug out with a mechanical digger.

Foliar spray: 150 ml Glyphosate 360 and 10 ml penetrant/10 litre. Alternatively, if surrounding broadleaf plants are to be saved, use 30 ml Haloxyfop and 10 ml penetrant/10 litre. If the plants have seeded, repeat treatment to control resultant seedlings or young plants.

NPPA Pest Plant

 PurplePampas

Variegated thistle

Silybum marianum

Country of Origin: Mediteranian and S W Europe

Progressive Control Pest Plant

Remove: Grub out small infestations before flowering.

Foliar spray: Spot spray with 60 ml Tordon® Brush Killer/10 litre or 1 gm Metsulfuron-Methyl 600/10 litre.

 VariegatedThistle

Other Ground Cover and Grass Invaders

African clubmoss

Selaginella kraussiana

Country of Origin: Central & Southern Africa

Remove: Rake and hand pull small infestations.

Foliar spray: 100 ml Glyphosate 360 and 2 gm Metsulfuron-Methyl 600 and  10 ml penetrant/10 litre.

NPPA Pest Plant
AfricanClubmoss

Agapanthus

Agapanthus praecox

Country of Origin: South Africa

Remove: Dig out isolated plants, removing all rhizomes. Dispose of rhizomes in landfill.

Stump treatment: Cut leaves close to ground and paint stump with  Vigilant® Herbicide Gel.

Foliar spray: 60 ml Triclopyr 600 EC and 20 ml penetrant/10 litre.

 Agapanthus

Artillery plant or Aluminium plant

Lamium galeobdolon

Country of Origin: Europe & West Asia

Remove: Dig out small infestations, taking care to remove all plant material.

Foliar spray: 5 gm Metsulfuron-Methyl 600 and 10 ml penetrant/10 litre.

NPPA Pest Plant
 ArtilleryPlantOrAluminiumPlant

Bamboo

Phyllostachys species

Country of Origin: Asia

Remove: Large bamboo clumps can be dug out with a mechanical digger.

Foliar spray: Cut close to the ground and spray regrowth with 200 ml Amitrole and 20 ml penetrant/10 litre.

Inject: During warm soil conditions, apply Hexazinone granules 10 cm deep by injection or in cut trenches on the uphill side of the plant roots and at 1m intervals down the slope with exception of down slope away from the roots. Hexazinone is a residual herbicide and should be used carefully to avoid adverse effect on surrounding vegetation.

 Bamboo

Burdock

Arctium minus

Country of Origin: Europe & West Asia

Remove: Grub out individual plants removing tap root. Mowing before flowering will reduce the spread of burs.

Foliar spray: Spray at rosette stage or before flowering with 100 ml Glyphosate 360 and 10 ml penetrant/10 litre.

 Burdock

Cape Honey Flower

Melianthus major

Country of Origin: South Africa

Remove: Dig out small plants. Dispose of roots in landfill.

Stump treatment: Cut and paint stump with 5 gm Metsulfuron-Methyl  600/1 Litre. Remove any suckering shoots.

Foliar spray: 5 gm Metsulfuron-Methyl 600 and 10 ml penetrant/10 litre or  60 ml Tordon® Brush Killer and 10 ml penetrant/10 litre.

 CapeHoneyFlower

Giant Reed

Arundo donax

Country of Origin: Eurasia

Remove: Can be dug out wilh a mechanical digger.

Foliar spray: Cut close to the ground and spray regrowth with 10 ml Amitrol and 10 ml Haloxyfop and 20 ml penetrant/1 litre.

Inject: During warm soil conditions, apply Hexazinone granules 10 cm deep by injection or in cut trenches on the uphill side of the plant roots and at 1 m intervals down the slope with exception of down slope away from the roots. Hexazinone is residual herbicide and should be used carefully to avoid adverse effect on surrounding vegetation. NPPA Pest Plant
 GiantReed

Horsetail

Equistum sp

Country of Origin: Ancient plant, world wide

Remove: Rake or hand pull small areas during a dry period. Dispose of plants in landfill. Note that dropped fragments will grow.

Foliar spray: 60 ml Triclopyr 600 EC, 5 gm Metsulfuron-Methyl 600, 150 ml Glyphosate 360 and 20 ml penetrant/10 litre. Check regularly and spray regrowth.

NPPA Pest Plant
 Horsetail

Ice plant

Carpobotus edulis

Country of Origin: South Africa

Remove: Hand pull plants and allow to dry upside down without touching  the ground. Best suited to small infestations.

Foliar spray: 60 ml Triclopyr 600 EC and 20 ml penetrant/10 litre.

NPPA Pest Plant
IcePlant 

Mexican Daisy

Erigeron karvinskianus

Country of Origin: Mexico

Remove: Dig out small patches and follow up monthly.

Foliar spray: 100 ml Glyphosate 360 and 5 gm Metsulfuron-Methyl 600 and  10 ml penetrant/10 litre.

NPPA Pest Plant
 MexicanDaisy

Montbretia

Crocosmia X crocosmiiflora

Country of Origin: Africa

Remove: Dig out bulbs. Dispose of bulbs in landfill.

Foliar spray: 100ml Glyphosate 360 and 5 gm Metsulfuron-Methyl 600 and  20 ml penetrant/10 litre. Plant is a perennial and the leaves usually die in winter, so spray leaves in summer just before or during flowering to maximise the kill.

 Montbretia

Nasturtium

Tropaeolum majus

Country of Origin: Europe, America, Africa, Asia

Remove: Hand pull.

Foliar spray: 100 ml Glyphosate 360 and 20 ml penetrant/10 litre.

 Nasturtium

Onion weed

Allium triquetum

Country of Origin: SW Europe, North Africa

Remove: Dig out bulbs when soil is moist. Dispose of bulbs in landfill.

Foliar spray: 5 gm Metsulfuron-Methyl 600 and 10 ml penetrant/10 litre.

 OnionWeed

Periwinkle

Vinca major

Country of Origin: Mediterranean

Remove: Hand pull all plant material including runners. Repeat regularly.

Foliar spray: 200 ml Glyphosate 360 and 20 ml penetrant/10 litre. Requires constant follow up. Spray regrowth with 300 ml Glyphosate 360 and 20 ml penetrant/10 litre.
 Periwinkle

Plectranthus

Plectranthus ciliatus

Country of Origin: South Africa

Remove: Pull up and dispose of a at refuse transfer station, bury or burn.  This method can be used before spraying to reduce amount of spray needed.

Foliar spray: 100 ml Glyphosate 360 and 10 ml penetrant/10 Litre or 2 gm Metsulfuron-Methyl 600 and 10 ml penetrant/10 litre or 30 ml Triclopyr 600 EC and 10 ml penetrant/10 litre. NPPA Pest Plant
 Plectranthus

Stinking Iris

Iris foetidissma

Country of Origin: Europe & North Africa

Remove: Remove seed heads and dig out plants when soil is moist.  Dispose of all materials in landfill.

Foliar spray: 100 ml Glyphosate 360 and 5 gm Metsulfuron-Methyl 600 and  20 ml penetrant/10 litre of water.

 StinkingIris

Tuber ladder fern

Nephrolepis cordifolia

Country of Origin: North Australia and Asia

Remove: Dig out, taking care to remove all tubers.

Foliar spray: 1 gm Metsulfuron-Methyl 600/10 litre.

NPPA Pest Plant
 TuberLadderFern

Tutsan

Hypericum androsaemum

Country of Origin: South and West Europe

Remove: Hand pull small plants.

Stump treatment: Cut and paint stump with 5 gm Metsulfuron-Methyl 600/1 litre.

Foliar spray: 5 gm Metsulfuron-Methyl 600 and 10 ml penetrant/10 litre or  100 ml Glyphosate 360 and 10 ml penetrant/10 litre, or 60 ml Tordon® Brush Killer and 10 ml penetrant/10 litre. NPPA Pest Plant
 Tutsan

Wandering Jew

Tradescantia fluminensis

Country of Origin: South America

Remove: Rake or hand pull small areas during a dry period. Dispose of plants in landfill. Note dropped fragments will grow.

Foliar spray: 60 ml Triclopyr 600 EC and 20 ml penetrant/10 litre or 300 ml Glyphosate 360 and 30 ml penetrant/10 litre in areas near water. Check regularly and spray regrowth. NPPA Pest Plant
 WanderingJew

Explanations

NPPA Pest Plant: National Pest Plant Accord. Has a list of pest plants banned from sale or propagation throughout New Zealand and is administered by Ministry for Primary Industries.

Dispersal Mechanisms: Most creeping ground cover plants are dispersed by; seeds, stem or root fragments, or bulbs, so care should be taken when removing such plants.

Timing: Herbicides are more potent when plants are actively growing, during Spring and Summer.

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Herbicide Notes

Always read label instructions.

Amitrole

Brand names:

  • Amitrole 4L,
  • Agpro Activated Amitrole.

Glyphosate 360

Brand names:

  • Nufarm Glyphosate Gold,
  • Rainbow & Brown Glyphosate,
  • Roundup® Renew,
  • Roundup® 360 pro.

Haloxyfop

Brand names:

  • Gallant™ Ultra, 
  • Agpro Haloxyfop 100.

Hexazinone

Brand names:

  • Velpar®20G.

Metsulfuron-Methyl 600

Brand names:

  • Agpro Meturon®,
  • Associate®600WDG,
  • Eradicate 600,
  • Escort®,
  • Matrix™,
  • Meteor 600,
  • Mustang®,
  • Rainbow & Brown MSF600.

Triclopyr 600 EC

Brand names: 

  • Agpro Triclop 600,
  • Brush Off®,
  • Eliminate,
  • Grazon®,
  • Rainbow & Brown Triclo Herbicide,
  • Scrubcutter®,
  • Vanguard,
  • Victory™.

Tordon® Brush Killer

contains Picloram and Triclopyr.

Vigilant® Herbicide Gel

contains Picloram.

Penetrant

Sticking or wetting agent that assists the potency of herbicides.

Brand name:

  • Pulse.

Herbicide Supplies

Are sold locally at Nurseries, Garden Centres and Farm supply businesses.

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Helpful Websites

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Disclaimer

Information in this fact sheet regarding herbicide does not necessarily appear on the labels of the products concerned.

Tasman District and Nelson City Councils do not accept liability for any damage to any person, property or thing that may arise from use of chemicals at non-standard rates. Mention of product trade names implies neither endorsement of those products nor criticism,  of similar products not mentioned.