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Synero 3L

£189.60 inc VAT £158.00 ex VAT
QTYPrice per itemSaving
1 - 2 £189.60 £158.00
3+ £186.00 £155.00 2%
  • Effective control of tough and invasive weeds including the particularly difficult Japanese knotweed, ragwort and brambles.
  • Can be used on all established amenity grassland with the exception of airfields.
  • Excellent for commercial use as a result of a large pack size and low application rate.
  • Virtually no odour.
  • Rainfast in 1 hour.
  • Safe on grass.
  • Outstanding levels of translocation gets Synero deep into the roots of the plant.

Full Description

Synero is the ultimate product for controlling invasive weeds on a large scale. It is ideally suited for commercial use due to it's large pack size and low application rate. This product is very similar to other well known brands such as I-cade & Garlon.

Synero is a fast acting herbicide for the control of perennial broad-leaved weeds including Japanese knotweed, dock, creeping thistle, nettle, buttercup, ragwort and dandelion in areas of non-crop land such as motorway and railway embankments, amenity grassland and industrial areas (excluding airfields).

Please note the application window for this product is March to July only. For applicatons made between 1st March and 31st May, one application may be made per calendar year. For applications made between 1st June and 31st July, only one application may be made in a 2 year period. 

Our Recommendation

  • Always read the label before use.
  • Avoid drift onto neighbouring plants and waterways.
  • Both grass and weeds must be actively growing to ensure effective weed control and minimal check to the grass.
  • Do not use on grass less than one year old.
  • To allow maximum translocation to the roots do not cut grass for 7 days after application of Synero.
  • Avoid appying Synero when rain is forecast imminently.
  • Save money and time and mix with Blue Dye to ensure no areas are missed or overdosed.
  • Always wear protective clothing, such as Chemical Resistant Gloves, when handling Synero.

Technical Specification

ProductSynero 3L
Period Of UseSpring, Summer
Pack Size3 Litre
Active Ingredient30g/L aminopyralid + 100g/L fluroxypyr
Application MethodKnapsack, Boom Sprayer
Knapsack Sprayer Rate100ml per 10L of water
MAPP No.18578
Boom Sprayer Rate2L per Hectare
Pack Size Coverage25,000m²
Treats (Pest / Weed / Disease)Brambles, Dock, Giant Hogweed, Gorse, Ground Elder, Himalayan Balsam, Horse Tail, Ivy, Japanese Knotweed, Ragwort, Tough Woody Weeds
Product LabelDownload

Help & Advice

Problem Guide


Problem Guide


Problem Guide

Japanese Knotweed

How To Guide

How To Calibrate A Knapsack Sprayer

Product Calculator

How much Synero 3L will you need?

Purchase the correct amount of product for your requirements with our product calculator - which will tell you how much product you require.


Calculator Disclaimer - This is guide only, For crop specific rates please check the product label.


By law, everyone who uses pesticides professionally must have received adequate training in using pesticides safely and be skilled in the job they are carrying out. Upon purchasing this product you and/or the end users are responsibile for ensuring that these products are used in line with industry Approved Codes of Practice. All operators must be trained and certificated in using and applying any Ministry Approved Professional Product (MAPP). Use plant protection products safely. Always read the label and product information before use. Please be aware that by proceeding you are purchasing a professional pesticide product. You must ensure the end user of these products complies with the DEFRA/HSE Code for the Safe use of Pesticides. There are legal responsibilities covering the storage and use of professional use pesticides. These responsibilities are covered by The Food and Environment Protection Act 1985 (FEPA) and Control of Pesticide Regulations 1986 (COPR).
£189.60 inc VAT £158.00 ex VAT
QTYPrice per itemSaving
1 - 2 £189.60 £158.00
3+ £186.00 £155.00 2%
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DeliveryIn Stock for Next Day Delivery
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