This Blog section is for news about Rainbow & Brown products and their application but especially new products.
This is the place to come to ask a question or find an answer about what is that weed and how best to deal with it for your specific circumstances.
06 Oct
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8730
In reply to a customer question regarding control of Gravel Groundsel Gravel groundsel (Senecio skirrhodon) is, according to Massey University & other authorities, controlled by nearly all herbicides, except for a few specialist cropping herbicides. But there aren't any herbicides specifically registered for gravel groundsel, so we've got to make a..
06 Oct
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11781
In response to a question from a farm adviser about a customer who'd sprayed for plantain control, and now wanted to drill new seed.Broad leaf plantain is normally taken out successfully at the normal rates at which glyphosate is used to spray out paddocks for cropping or for new pasture.That is between 3L/Ha and 5L/Ha when using G360 liquid, or th..
06 Oct
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8650
Regarding clover, you'll be aware that glyphosate is not effective against it. And you will also probably be aware that the herbicides that are very effective against clover (triclopyr, metsulfuron-methyl) do have some residual effect that may well be harmful to your flower species. Triclopyr is one of the actives in Rainbow & Brown's GrassMate, ..
26 Oct
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464
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..
08 Oct
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2128
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..
30 Sep
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3404
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..