This Blog section is for news about Rainbow & Brown products and their application but especially new products.
General information about farming, weed control, herbicides, seaweed, fertlisers and other.
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Agapanthus is not really a weed, of course. It’s more of an ornamental flower, and a pretty nice one too, in its place. It is, for example, better able than almost anything else to handle the carbon monoxide laden atmosphere in the middle of a busy motorway. That’s why we see so many planted there, and looking very pretty too. The problem, however,..
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Parsley dropwort (Oenanthe pimpinelloides) is very often known as ‘carrot weed’ although it is not closely related to the wild carrot species.
It is common in Northland and South Auckland, but also exists in other North Island locations. It grows in pastures as well as waste areas, roadsides, disturbed ground, sports fields and lawns.
Carrot wee..
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Glyphosate Continues to RiseShort supply of raw material and increased production and shipping costs create almost the “perfect storm”!Increased global demand coupled with China’s Yunnan district have cut power supply by 10-30% resulting in shortages and huge increases in the price of yellow phosphorous which is the main raw material used for glyph..
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NATURAL or GREEN
HERBICIDES - THE HIDDEN FACTS
This article arose from a question from a customer that wanted to spray out a whole paddock – grass and weeds - but wanted a natural herbicide solution as they had a horse that was sensitive to chemicals. Fair enough.
We have always been keen on offering some more “green” herbicide alternatives..
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How toxic are herbicides?Although herbicides are chemicals and all chemicals should
be treated with respect there needs to be some perspective given as there is a mountain of misinformation being
spread by people that really don’t know what they are talking about. I hear it all the time on talkback and it
makes my blood boil.Below is a table whic..
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Healthy horse paddocks in NZ need a three-pronged seasonal approach: weed control for persistent species like docks and buttercups, residual fly and tick management through summer, and trace mineral support to fill gaps that good pasture alone can miss.
✓Docks and buttercups reduce pasture quality and can irritate horses; treat in early spring..
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Foliar fertilisation means spraying dissolved nutrients directly onto plant leaves, where they're absorbed through the leaf surface and bypass the soil entirely. It's most useful for correcting mid-season deficiencies quickly, delivering micronutrients that soil chemistry is locking up, and supporting plants at critical growth stages when you can..
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Note: This article was last updated March 2026
What Can We Use Instead of Banvine(1)?
Quick answer: Banvine(1) contained 200g/L 2,4-D and 100g/L dicamba. The closest ready-mixed alternative from Rainbow & Brown is LawnMate. A lower-cost option is to use individual herbicides such as WHACK – 2,4-D 800 and Rainbow & Brown Dicamba 500 SL, but any ..