Declared plant in Western Australia

Acacias (Acacia spp., all species not native to Australia (except Acacia farnesiana)
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See also: Control Method | Weed description | Declared plants list
 
(Locality Code: C= City; S=Shire; T=Town)
 
Category: P1, P2
Location: for the whole of the State . All species not native to Australia (except Acacia farnesiana)
 

Control Codes and Landholder Obligations

P1

REQUIREMENTS

Prohibits movement

The movement of plants or their seeds is prohibited within the State.

This prohibits the movement of contaminated machinery and produce including livestock and fodder.

P2

REQUIREMENTS

Aim is to eradicate infestation

Treat all plants to destroy and prevent propagation each year until no plants remain. The infested area must be managed in such a way that prevents the spread of seed or plant parts on or in livestock, fodder, grain, vehicles and/or machinery.

Control Method

Recommended herbicides

:
  • Clopyralid
  • Triclopyr + Picloram

 

Herbicide

:

Lontrel 750 SG, Clopyralid 750, Granosan

Active ingredient and Group                  

:

750 g clopyralid   as potassium salt (Group I)

or 300 g/L triisopropanolamine salt

Rate of product

:

200 g in 2.5 L water

Wetting agent

N/A

Remarks

:

Single stem plants less than 25 cm diameter  1 mL/cut made waist high at 10-13 cm intervals.

Multiple stems or greater than 25 cm diameter,  2 mL/cut at same spacing.

 

Herbicide

:

Grazon DS, Tri-pick, Grass-up, Picker.

Active ingredient and Group

:

100 g/L picloram + 300 g/L triclopyr  (Group I)

Rate of product

:

35 mL/10 L water

Wetting agent

Add at recommended rate as per label

Remarks

:

Apply to trees 1-3 m tall and thoroughly wet foliage.

 

Herbicide

:

Access (Group I herbicide)

Active ingredient

:

120 g/L picloram (isooctyl ester)+ 240 g/L triclopyr (butoxyethyl ester)

Rate of product

:

1:60 in distillate

Remarks

:

Treat plants up to 5 cm diameter Treat all stems on multiple stemmed plants. Root suckering may occur and will require treating

 

Herbicide

:

Garlon and various other trade names (Group I herbicide)

Active ingredient and Group

:

600 g/L triclopyr

Rate of product

:

16 mL/10 L water for trees 1-2 m tall

32 mL /10 L water for trees 2-3 m tall


Weed Description

Family:           Mimosaceae (click to view image)

Form:              Tree/Shrub - Perennial

Status:            Present in WA             

                    (click to view image)

 

Trees and shrubs sometimes spiny.  One species, Prickly acacia (Acacia nilotica) is a Weed of National Significance.

Leaves:        Leaves are bipinnate, that is they are divided twice and give a feathery appearance.

Flowers:       Flowers are grouped into dense globular or cylindrical spikes, either in the axils of the leaves or at the end of branches.

 

Other relevant information related to this topic:

·     Quarantine WA

·     Permitted and quarantine species list

·     Weed of National Significance

·     Weeds CRC

·     Permit for minor off-label-use of a registered agvet chemical product
(Permit number – per9655)

·     Off-label permit (olp) for use of a registered agvet chemical product
(Permit number - per4590)