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.
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The Question: Customer has a blueberry orchard that was planted in March 2017 – The plants are very shallow rooted. They to spray black nightshade and want to know if GA200 would be safe to use (Their sprayer has a hood over the nozzle, so they should not have spray drift, but they are worried about the shallow roots) Is there a possibility that t..
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Question:GA200 looks interesting, it seems to be like a broad spectrum glyphosate?If it kills clovers does that mean it also kills gorse and other legumes? I want to control gorse growing under and around 4 year old alder and poplar trees. I have been cutting the gorse and using MS600 Metsulfuron to spray the stumps, but don't??? want to go too ..
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My partner sprayed the gibber on the paddocks today - he wasn't supposed to do the one the sheep are currently in but did. The instructions say stock should not graze the area for 6 odd weeks so is there a problem and do I need to get the sheep off - they are ewes and lambs
A: No need to move the stock, including the lambs. Gibber has no toxic ef..
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QUESTION:Can Gibber growth promoter be applied to very new grass, sown just a month ago?ANSWERDon’t do it. The Gibber will definitely damage grass that’s not well developed. It works by elongating cell growth, which produces more leaf mass. But the physical structure of the plant has to be strong enough to stand that kind of turbocharging effec..
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QUESTION: What rate would you recommend for spraying Decision through a handgun – can you give me a rate per 60 litres?ANSWER:It’s not as simple as it sounds.Decision is normally applied only as an area spray, with a boom or roster sprayer. So the rate is based on amount of product per unit of area. That is, for example, 50g per hectare. It’s dif..
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Hi Folks,I just came across the following blog, which contains ideas on how to control Nostoc Commune (snot like algae that is invading many driveways/properties in NZ)https://www.pressreader.com/new-zealand/nz-lifestyle-block/20180801/281629601025207..
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Q: What is the most cost effective weed spray to control gorse?A: MSF600 is the most cost effective gorse spray that we stock. As at Sept 2015 1kg MSF600 costs $78.20 and will make up 5000lt of Gorse spray for Handgun spraying application, it is always recommended that you add an organisilicone penetrant (Superwetter or AirwetLF) to the mix no ma..
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Q: We are looking to control Catsear and dandelion in our pastures. Can you please advise me whether MCPA750 would be appropriate for this, or whether you have a spray that would be better suited to this purpose?A: Catsear and dandelion are susceptible to the same herbicides, so that simplifies things.ControlIf the plants are small (seedlings or ..
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Q: Hi is gibber900 any good for use on normal household lawns that need fertilizer as some of the lawns I mow are very deficient?A: Yes it definitely works on lawns. I’ve even seen a lawn that was next to a house paddock sprayed with Gibber, and every time the bloke turned the tractor at the fence, a fan-shaped of overspray went onto the edge of..
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Agapanthus growing out of control?
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 ve..
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Q: What weedspray do you recommend to kill Wandering Jew?
A: The best spray of all for Wandering Jew is our Triclo. I have used it personally on a large patch in Rotorua and it does a great job. You may get some regrowth but a second treatment then does the job very nicely. Use rate is 6ml/L of water in a knapsack always add Superwetter Penetra..
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Q: When it the best time to spray pennyroyal and what weed spray should i use?A: Pennyroyal is a weed that you may not notice on your farm until it flowers. Unfortunately by the time Pennyroyal has flowered it is too late to get adequate control. Pennyroyal is best controlled when it has lots of leaf, but prior to it developing any flower stalks. ..
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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 ..