This Blog section is for news about Rainbow & Brown products and their application but especially new products.
15 Jan
GrassMate or Triclo - which one should I use?
We frequently get asked whether a customer should use Triclo or GrassMate. Well here's some guidance.
- GrassMate and Triclo are often similar in price and for most of 2021 were the same price. This has happened following changes in the relative cost of certain raw materials.
- Both GrassMate and Triclo do much the same job; selective broadleaf and brushweed control in pasture, and at the same usage rates.
- Both are suitable for boom spraying pastures, including by air, but can also be used for spot spraying.
- Both are also very useful for lawn and fine turf weed control.
So, what’s the best way to choose between them for your situation?
TRICLO IS:
- Grass and clover friendly.
- Target weeds must be growing vigorously, not stressed.
- Controls kikuyu at 2L/Ha, without pasture damage.
- Works well in spring, summer, but not in drought.

GRASSMATE IS:
- Grass friendly, but damages clover.
- Controls ragwort & thistles better than Triclo.
- Good results even if target plants are a bit stressed.
- Year-round spraying (with SuperWetter added)

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Every NZ farm that uses hazardous substances needs an up-to-date chemical inventory and a current safety data sheet (SDS) for each product, kept where workers and emergency services can get to them. When WorkSafe checked 680 sheep, beef and dairy farms in late 2025, missing SDSs and inventories were behind 94% of the improvement notices issued. B..
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A wetter helps spray droplets spread across a leaf and stay there, instead of beading up and rolling off before the herbicide gets in. Use a non-ionic wetter for everyday spraying, and step up to an organosilicone wetter for waxy, hairy, dusty or stressed weeds. Always check the herbicide label first, because it tells you whether a wetter is need..
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Spring is the only time of year a wasp queen is on her own. She's out of hibernation, building a small nest by herself and feeding her first larvae with no workers to back her up. Catch her now and that nest never forms, which means no colony of thousands and no new queens next autumn.
✓Queens are active from early spring, roughly September to..
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