Garden Nursery Products
Gold Coast · Est. 1979

Treeson Herbicide 500ml – Powerful Control for Woody Weeds and Brush

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Pro-Grade Quality
24hr Dispatch
FARM CHEMICALS · SKU: 038-084

Treeson Herbicide 500ml – Powerful Control for Woody Weeds and Brush

★★★★★4.7 (55 Google reviews)·In Stock — Ready to Ship

$42.35 Inc GST

TREESON Herbicide is a 500 mL pack of a 200 g/L triclopyr and 100 g/L picloram herbicide. The label lists stem injection and cut stump control of unwanted timber, and foliage spray for blackberry, gorse and harrisia cactus. Lawn and home garden are not listed. It can damage desirable plants, and picloram can stay in the soil.

In stock

Fast DispatchWithin 24hrs Australia-wide
Quality GuaranteedPro-grade formulations
1 kg32 × 12 × 24 cm
Need Advice?07 5537 4585
Active IngredientPicloram @ 100g/L & Triclopyr @ 200g/L
SKU: 038-084 Category: Brand: ,

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Product Description

TREESON Herbicide is a 500 mL pack of a herbicide with 200 g/L triclopyr (as the triethylamine salt) and 100 g/L picloram (as the triisopropanolamine salt) (Group I, APVMA 68104; Surefire Treeson). The label lists control of unwanted timber by stem injection or cut stump and brushcutter application, and control of blackberry, gorse and harrisia cactus by foliage spray. Lawn and home garden are not listed as uses.

It will damage plants you want to keep. Do not apply close to, or on areas containing, the roots of desirable vegetation, where treated soil may be washed onto areas growing or to be planted with desirable plants. Do not move sprayed soil to places where desirable plants will grow. Picloram can remain active in the soil for extended periods. Do not allow spray drift onto waterways, native vegetation or susceptible crops.

When not to treat. Do not treat trees with poor sap flow, or plants that are stressed or not actively growing. For high volume spraying, do not spray if rain is likely within 1 hour or foliage is wet. Do not burn treated areas for 9 months or mechanically clear them for at least 12 months. Stock should be kept away from treated poisonous plants until they have died down.

How to use it. Rates depend on the use. For example, foliage spray is 500 mL per 10 L of water for blackberry and 375 mL per 10 L for gorse. See the Application Rates tab, our herbicide mixing guide and the full label before mixing.

Before you buy. Do not contaminate streams, rivers or waterways with the chemical or used containers. The label asks for elbow-length PVC gloves and a face shield. If poisoning occurs, contact a doctor or the Poisons Information Centre on 13 11 26. If in eyes, flood with water for at least 15 minutes and see a doctor.

Delivery from $17, priced by weight and postcode at checkout.

Additional information

Weight1 kg
Dimensions32 × 12 × 24 cm
Size

500ML

Safety Data Sheets (SDS)

Application Rates

Application Instructions for Surefire Treeson Herbicide:

  • Stem Injection: Mix 1 part Treeson with 4 parts water.
  • Cut Stump/Brush Cutter Applications: Mix 500mL Treeson with 10L water.
  • Ideal for small saplings that can’t be stem injected.
  • High Volume Spraying: Mix 500mL to 2.5L Treeson with 100L water.

 

Important Notes:
These rates are a general guide. Always read the full Directions for Use, safety precautions, and first aid instructions on the label before opening the product.
Use the herbicide only as directed to ensure safety, legality, and effectiveness.

Tips for use

How to Use – Stem Injection
Mixing Ratio: Combine 1 part Treeson with 4 parts water.

Where to Inject: At or near the ground level, ideal for:

Poor growing conditions (e.g., hard soils, low rainfall areas).
Species hard to control, like Stringy Bark and sap-bleeding Eucalypts.

Number of Cuts per Stem (Close Space Treatment):

10cm diameter: 3 cuts
20cm diameter: 5 cuts
30cm diameter: 7 cuts
40cm diameter: 10 cuts
50cm diameter: 12 cuts
60cm diameter: 14 cuts

 

Restrictions

  • Avoid treating trees with poor sap flow or those under stress (e.g., drought, extreme cold, or previous herbicide use).
  • Do not apply where treated soil might reach desirable plants or crops.
  • Avoid using in areas with heavy rain runoff that could spread the herbicide.
  • Do not burn treated areas for 9 months or clear mechanically for 12 months.
  • For spraying, avoid application if rain is expected within 1 hour or if foliage is wet.

 

Storage Instructions

  • Store in the original container in a cool, well-ventilated area.
  • Avoid direct sunlight and keep away from food, seeds, and fertilizers.
  • Containers with the drumMUSTER logo can be recycled if clean and dry.

 

Spill Management

If a Spill Occurs:

Avoid contact. Wear protective gear (face shield, gloves, overalls).
Stop leaks safely and dam the area to prevent entry into waterways.

Small Spills:

Absorb with sand, soil, or sawdust.
Collect waste in a sealable container for disposal.
Wash residues with detergent and water, then collect for disposal.

Large Spills:
Dam the area and report the spill to the manufacturer.

 

Safety Guidelines

  • Avoid contact with skin and eyes. Do not inhale spray mist.
  • Wear protective clothing, including gloves, face shield, and overalls.
  • Wash thoroughly after handling the product.
  • After use, clean all safety gear, including gloves and face shield.

 

First Aid
If Poisoned: Call a doctor or the Poisons Information Centre (Australia: 13 1126).
If in Eyes: Rinse with water for at least 15 minutes and see a doctor.

For more details, consult the Safety Data Sheet (SDS).

Active Ingredients

Picloram @ 100g/L & Triclopyr @ 200g/L

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Frequently asked questions

Do I need a licence to buy or use these?

Most products here are unrestricted and can be bought and used by anyone following the label. A few are restricted chemical products that need a chemical user permit in some states - those are flagged on the product page. If in doubt, check the poison schedule on the label.

How do I work out the mixing rate?

The label gives a rate either per 100 L of water (a concentration) or per hectare or per 100 square metres (an area rate). For a knapsack, work out the area one tank will cover, then scale the per-area rate to that tank volume. Calibrate the sprayer before you start.

Why do the same chemicals come under different brand names?

Once an active ingredient comes off patent, several companies register their own version. A generic glyphosate 360 and a big-brand glyphosate 360 are the same active at the same strength - the difference is formulation quality, surfactant load and price.

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