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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

30 Sep How to Trap Wasp Queens in Spring NZ
Casey 0 599
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..
20 Sep How to Kill Carrot Weed (Parsley Dropwort) in NZ Pasture
Shayne 0 13527
Carrot weed is the common name for parsley dropwort (Oenanthe pimpinelloides), a perennial broadleaf weed that regrows each year from small black tubers on its roots. Stock won't eat it, so it takes over paddocks quietly and then flowers from October through April once it's too late to do much about it. The window that actually works is autumn th..
13 Sep What Is Biochar and How Does It Work in NZ Soil?
Casey 0 135
Biochar is a highly porous form of charcoal made by heating wood with very little oxygen, and it works by giving soil (and gut) microbes somewhere to live while holding onto water and nutrients that would otherwise wash straight through. Southland Carbon makes it from New Zealand wood biomass at Pukerau, and the same process that produces the bioc..