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Diamond Horse Tail Weed Killer 1L

Availability: In stock

HORSETAIL Plus Control For Other Tough Invasive Weeds - BRAND NEW 

  • Buy 3 for £45.00 (£54.00 inc VAT) each and save 7%
  • Buy 10 for £42.00 (£50.40 inc VAT) each and save 13%
£57.59 Inc VAT £47.99 Ex VAT
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Product Description

Horsetail / Marestail is a weed that is particularly troublesome to control as its roots are both deep and fast growing. Horsetail can reach up to 1m high during the summer months. Horsetail is difficult to control by hand as it can re grow from the smallest of rhizomes left in the soil. To control Horsetail you will need a weed killer specifically designed to target Horsetail such as Diamond.

Diamond replaces the popular product 'Pearl'.

Diamond is a brand new product EXCLUSIVE to Agrigem which offers excellent results on many tough weeds including horsetail. Diamond is a soluble concentrate containing 160g/l 2,4-D + 240g/l glyphosate.

Diamond is one of the few products on the market that will successfully control Horsetail & Marestail. Previous products that controlled this difficult weed containing glufosinate-ammonium are no longer permitted for sale in the U.K making Diamond the go to product following its launch in spring 2019. This product is also available in a larger pack size called Diamond 5L

It is approved for use on Amenity Vegetation, Orchards, Hard Surfaces (Railway Ballast), and Green Cover not being used for crop production. Once on the foliage, the 2,4 - D will break down leaf tissue which enables the glyphosate to translocate around the plant far quicker and deeper. It will deliver total weed control to both grasses and broadleaved weeds, controlling them quicker and penetrating deeper into the root system than glyphosate alone. For increased results, mix with Activate-g 1L to penetrate waxy & hairy leaves.

To avoid missing or re-treating areas we always recommend using in mix with our biodegradable Blue Dye 


If you need advice or would like to hear how Diamond horsetail / marestail killer could fit into your herbicide programmes, please give our BASIS  trained technical team a call on 01522 246491.

Key Benefits of Diamond

- Faster acting than glyphosate alone

- Kills Marestail and Horsetail

- Controls tough weeds such as Nettle, Ragwort, Horsetail and many other broadleaved weeds which are difficult to kill with straight glyphosate.

- Grassland destruction recommendation giving improved and quicker control of weeds such as docks. 

- Fast action. Just one application for target weeds.

- Extended weed spectrum to manage tough to control weeds like Thistles, Oilseed Rape and Grasses. 

- Use less glyphosate per hectare, you can reduce by half the amount of glyphosate per hectare with the same result.

- Safe formulation for trees in orchards. 

- Available in 1L or 5L


Diamond is an alternative brand to Kurtail Evo.


Brand Diamond
Active Ingredient 160g/l 2,4-D + 240g/l glyphosate
MAPP NO 18832
LERAP Category B
Pack Size 1L
Pack Size Coverage 2,000m2
Boom Sprayer Rate 3 - 5L per Hectare in 200L of water
Application Method(s) Boom Sprayer
Treats (Pest/Weed/Disease) Annual Weeds, Bamboo, Bindweed, Bracken, Broad-leaved Dock, Couch Grass, Garden Weeds, General Weeds, Gorse, Horse Tail, Japenese Knotweed, Mare's Tail, Nettle, Pavement Weeds, Perennial Weeds, Ragwort, Rhododendron, Sycamore, Thistle
Area of Use Artificial Surfaces, Hard Surfaces
Safe For Use On Safe Around Fruit Trees
Period Of Use March, April, May, June, July, August, September, Spring, Summer, Autumn
MPN Does not apply

Application Rates

Recommended Dilution Rates
Rate Per Hectare

Dilution Per Litre

*apply in 200L per hectare

Weeds Controlled
3 Litres 15ml per litre of water Annual Weeds & Grasses
5 Litres 25ml per litre of water

Horsetail, Bramble, Docks, Ragwort,

Grasses & Other Perennial weeds


Recommended Period of Use
Jan Feb
Mar Apr May
Jun Jul Aug Sep Oct Nov Dec
      leaf leaf leaf leaf leaf leaf  leaf    
leaf = Optimum time for application

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