Product code: ASULOX
Asulox 20 L bracken controlAsulox 20 L bracken control
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Asulox - Bracken Specific Weed Killer

Asulox Proven to control bracken. Now approved for handheld use. Restrictions apply. contact us for more information. 

Previously called Brackn & Asulam 

£296.60 + VAT £355.92 inc VAT

In stock

£296.60 + VAT £355.92 inc VAT

Asulox bracken control has proven itself over many years as the market leading product for controlling bracken.

BREAKING NEWS: Asulox has just been re-approved for handheld use - There are new specific restrictions and a Stewardship scheme in place.

Please See the Table below

Containing the active ingredient Asulam this herbicide controls bracken by being translocated throughout the plant and down to the root. It is the most effective product for controlling bracken 

When Asulox is applied there are generally no immediate signs of die back, but the following season there will virtually be no bracken re-growth.  It recommended that a programme of follow up sprays are done with Asulox in the following calendar year, as this can greatly extend the period that the land is bracken free.

 Asulox is currently only available under an Emergency Authorisation which is reviewed annually.  However due to strong support from the Environment Agency and the Butterfly Conservation Trust there is hope that this may be overturned in the future.

Key Emergency Approval Dates for Asulox 2020

 Monday 1st July 2020
  Asulox can start to be used/applied.
 Handheld use (knapsack etc) can only be carried out on
 'Land designated for Conservation'
 Stewardship Questionnaire
 All purchasers to complete questionnaire: LINK
Tuesday 15th September 2020  
  Asulox can no longer be sold or applied, but can be stored 

 Thursday 31st October 2020


  Asulox cannot be stored or transported after this date


Conservation areas: 

National Nature Reserve
National Park
Area of Outstanding Natural Beauty
National Scenic Area (Scotland)
Scheduled Monument
Bracken control herbicide

Key points:  

  • Knapsack treatment is suitable where bracken is up to waist height
  • Bracken should be treated in full frond (all fronds fully expanded) but before yellowing (start of senescence). Normally this will be within the period from July to late August (early August in Northern Britain)
  • The addition of an adjuvant enhance the uptake of ASULOX by the bracken fronds thereby improving reliability under adverse conditions
  • We recommended the adjuvant Impetus which should be used at 0.1% of spray 20ml Impetus per 20l water
  • Asulox use can be visually identified by using Amvista Blue Marker Dye so you can see where you have sprayed. Simply added to the spray tank and mix with the Asulox plus Impetus
  • Herbicide symptoms are virtually absent in the year of spraying (due to the onset of senescence)
  • The fronds must not be damaged by livestock, frost or by cutting before treatment. Do not treat bracken affected by late frosts (bronzed and stunted fronds)
  • At least 6 weeks should elapse between applying Asulox and sowing or planting any subsequent crop
  • For best results allow a 24 hours rain-free period after application
  • Asulox contains the same active ingredients as previous products Asulam and BrackN
  • More information is available on bracken control at the Bracken Control Group

Application notes and guidance:

  • Apply on a dry day preferably without rain for 24 hours.
  • Knapsack nozzles should be suitable for a medium or coarse spray
  • Only one application should be made per year
  • The approval for use of Asulox on docks has been withdrawn
  • The approval for use of Asulox in weedwipers and drift sprayers has been withdrawn
  • Do not cut the bracken or admit livestock for at least 28 days after treatment

Please take time to read our "By Problem" page on bracken control for more information

Coverage 5,000 (5 L) (m2)
1.24 (5 L) (acres)
Contains 400 g/L asulam
MAPP 13175
Area of Use Agricultural, Forestry, Grassland, Horticultural, Moorland

Hand-held Application Rate

Bracken 200 ml to 20 L water

Boomspray Application Rate

Bracken 11 L/ha in 400 - 500 L/ha water

Product Usage Calendar

*KEY - Green = suggested period of use

Safety Sheets (MSDS)

View FileAsulox Safety Sheet    Size: (33.51 KB)
View FileAsulox Product Label    Size: (213.03 KB)

Asulox - Bracken Specific Weed Killer is rated 4.10 stars by Progreen Weed Control Solutions customers based on 10 product reviews