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Weed Control Chemicals NZ

Effective Weed Control Chemicals and Soil Boosters, distributed across New Zealand

Rainbow & Brown supplies a range of selective herbicides and weed control products as well as bulk blood and bone fertiliser and liquid lawn fertiliser.  We select only the highest quality products with proven results.  Products can be shipped throughout New Zealand

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From our Blog

05 Aug How to Kill Californian Thistle in Pasture NZ
Casey 0 6
Californian thistle is hard to kill because the plant you see is only the top of a deep, spreading root system that keeps throwing up fresh shoots from root buds. Knocking back the top growth won't get on top of it. The reliable approach is a herbicide that moves through the whole plant down to the root buds, applied while the thistle is actively..
05 Aug Grass stopped growing? It's just idling, not done
Casey 0 10
Grass growth stalls once soil temperatures drop below about 10 degrees, which is the winter feed gap every farmer knows. Gibberellic acid, a natural plant hormone sold as Gibb-Gro and Gibber900, can get pasture moving again once soils sit in the 6 to 13 degree range, with a lift in dry matter over about three weeks. It works as a top-up on green,..
15 Jun How to Keep Horse Paddocks Healthy in NZ: Weeds, Flies, and Nutrition
Casey 0 364
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..