This Blog section is for news about Rainbow & Brown products and their application but especially new products.
15 Dec
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Herbicide Resistance: A Growing Challenge
Herbicide resistance is becoming an increasing challenge across New Zealand, affecting pasture, cropping, vineyards, forestry, and lifestyle blocks alike. It occurs when a weed population adapts to survive a herbicide that once provided reliable control - often after the same mode of action has been used ..
13 Oct
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Most liquid herbicides handle NZ winters without issue, but some formulations will separate, crystallise, or coagulate if they get too cold. The safe default is to keep liquid products above 4°C. Dry formulations like granules and WDGs have no temperature restriction but need to stay dry.
Vegetable oil-based crop oils: keep above 4°C
Most liq..
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15 Jun
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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..
28 May
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473
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..
10 Mar
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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 ..