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All products work best on soft, non-woody plants - seedlings, grasses, herbaceous annuals.
They are non-systemic, so won't be as effective on woody plants or plants with runners, rhizomes (underground runners) or tap roots; because the natural plant oils do not penetrate woody stems or roots. Shrubs like lantana, gorse or bamboo, deep-rooted plants like thistle and runners like kikuyu, wandering jew, nutgrass or onion weed will not likely be killed with only one spray application. Cutting large annual weeds low, encouraging fresh tender growth and then spraying works very well.
Will drift from the spray harm other plants?
Drift will cause damage on leaves but as these products are non-systemic, it won't spread to other parts of the plant. They will not penetrate woody tissue and so no harm will come to tree bark.
Does it work on other plant parts?
Weed Blitz can kill weed seeds on the soil surface. It may be useful to apply to weeds with seeds about to drop such as Cobblers Pegs. We have customer feedback regarding success with controlling bindii.
How much do I use on each plant?
Direct and complete coverage of foliage is critical to success.
How quickly will I see results?
On a warm, sunny day, effects can be seen in a few hours. A rain and irrigation free period of two hours following application is desired. Organic herbicides are a great tool in the ongoing fight to spending more of your time planting and harvesting versus weeding, like any tool it needs to be suitable for the job at hand.
Sounds great, how can I get bigger amounts?
Slasher is available as a 1 L, 5 L, 20 L and 200 L concentrate, 1 litre makes 14 litres of spray, 5 L makes over 70 L, 20 L makes 280 L.
Weed Blitz is available as a 15 L concentrate, which will make 75 L of spray.
Which is the safest?
All products we stock are Certified Organic; meet the Australian standard and rigorous testing for toxicity to be classified as non-hazardous and have no impact on soil organisms. It is a good idea to wear eye protection and gloves, and to avoid exposing the skin to the spray. All of them are Classified as Not a Dangerous Good and they pose no risk to the environment and are non-toxic to animals. None of these move through the plant tissue and into the soil like the toxic herbicides on hardware store shelves.
Slasher Weedkiller BFA Organic
200 litre $2,600 + overweight freight charge
Material Safety Data Sheet
1 Litre Label Information
Tree Planting Pack
1 weed mat + 1 tree sleeve
Stakes not included.
More information on tree care...
Weed Blitz Organic Herbicide
This effective, organically certified, knockdown pine oil based weed control is non-selective and kills most weeds and their seeds by stripping their outer protective coating. Success will depend on the type of plant, size, season used and coverage. Soft, young, non-woody weeds are the most vulnerable and will respond best. Spray directly onto foliage, completely covering the plant, during the early hours of a hot sunny day. Safe to use around pets and doesn't harm earthworms or soil microbes.
Click to view a full list of weeds , what growth stage to achieve best control and further technical details
Perennial weeds and grasses may only be suppressed and not fully controlled so repeat applications or other weed management strategies may be required. These may include suppression with cardboard, old carpeting or mulch films, brush cutting, digging, etc.
Material Safety Data Sheet
Ready to Use for ease of quick application and small area spot spraying
Active ingredient: Pine oil 136 g / L.
750 ml trigger bottle, Covers about 7.5 m²
PW120minimum 3 per order
15 L bottle
Active ingredient: Pine oil 680 g / L.
Mix with water at 200 ml / L
Makes approximately 75 L
These water permeable weed mats are re-purposed from discarded cotton clothing. Not UV treated so they will biodegrade in about 2 years. The 370 mm x 370 mm mats are designed to be used with tree sleeves, but can be used anywhere you want your plants off to a good start by suppressing weeds and retaining moisture. They have 3 pre-cut holes for support stakes and include a slit for a snug fit around a tree stem. Much easier to transport to your planting site than mouldy hay bales, will last longer and contain no weed seeds.
TW151 Available as part of a Tree Planting Pack
TW152minimum 50 per order
Best used with Tree Sleeves
Australia and International Organic Certification
Organic Certification for Australia
Untreated Seed or Plant
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