Herbicide Alternative to Dichlobenil (Casoran)

A solution to controlling weeds in amenity vegetation

With the loss of dichlobenil, landscape managers are needing an alternative for controlling weeds in amenity vegetation.  Kerb Flo and Flexidor 125 provides an ideal tank mix solution to give long term control of many weeds.

Kerb Flo and Flexidor 125 combine to give high levels of weed control with plant safety. Their action in the tank-mix is complementary, leading to effective control of a wide range of grasses and broad-leaved weeds.  The tank-mix can even be applied to young plantings.  The herbicides are soil acting giving flexibility to apply even when weather is unsuitable for foliar acting herbicides.  The mixture will control emerged grasses and some Kerb-sensitive broad leaved weeds.  The mix should be used as part of a programme to give season-long control.

  • Wide range of weeds are controlled (some post emergence)
  • Just one application normally provides season-long control - Control will be reduced if soil is warm, dry or contains high organic matter content.  Broad leaved weeds will be mainly controlled pre-emergence of the weed seeds
  • Safe to ornamental plantings
  • Application can be made out of peak work periods
  • Soil acting - dry leaf not needed
  • Very cost effective compared to other weed removal methods
  • Both Kerb Flo and Flexidor 125 contain proven chemistry

How to use Kerb Flo and Flexidor 125

Application Timing
The tank-mix may be applied in autumn & winter from October 1st - January 31st.

Areas of Use
Amenity vegetation - any areas of semi natural or ornamental vegetation, including trees. Ornamental trees and shrubs should have been planted in their final position for at least one season.  Spring plantings should be treated the following Autumn.

Soil Type and Condition
The tank-mix can be applied to light, medium or heavy soils.  In common with other soil-acting herbicides, efficacy may be reduced in soil of high organic matter.  Excess organic debris or ploughed-up turf may also affect performance. Optimum weed control is achieved from applications to firm, moist, clod-free soils.
Best control is achieved when applied to cold moist soils.

Weeds Controlled  Kerb Flo (4.25 L/Ha)**  Flexidor 125 (2 L/Ha)
 Black Bindweed  Susceptible upto 2 leaf
 Black Nightshade  Susceptible upto 2 leaf
 Broad-leaved dock  Susceptible to germinating
 Cleavers  Susceptible upto 2 leaf
 Common Chickweed  Established  Pre-emergence
 Common Field Speedwell  Susceptible upto 2 leaf  Pre-emergence
 Common Fumitory  MS upto 2 leaf  Pre-emergence
 Common Mouse Ear  Pre-emergence
 Common Orache  Pre-emergence
 Common Poppy  Pre-emergence
 Corn Marigold  Pre-emergence
 Corn Spurrey  Pre-emergence
 Creeping Buttercup  Susceptible to germinating
 Fat-hen  Susceptible upto 2 leaf  Pre-emergence
 Field Forget-me-not  Pre-emergence
 Field Pansy  Pre-emergence
 Green Field Speedwell  Pre-emergence
 Groundsel  MS Pre-emergence
 Hairy Bittercress  Pre-emergence
 Ivy-Leaved Speedwell  Susceptible upto 2 leaf  Pre-emergence
 Knotgrass  Susceptible upto 2 leaf  Pre-emergence
 Parsley-Piert  Pre-emergence
 Pearlwort  Pre-emergence
 Pineappleweed  Pre-emergence
 Red Dead-nettle  Pre-emergence
 Redshank  Susceptible upto 2 leaf  Pre-emergence
 Ribwort Plantain  Pre-emergence
 Scarlet Pimpernel  Pre-emergence
 Scented Mayweed  Pre-emergence
 Shepherd's Purse  MS upto 2 leaf  Pre-emergence
 Small nettle  Susceptible upto 2 leaf  Pre-emergence
 Volunteer Rape  Pre-emergence
 Wild Radish  Pre-emergence
 Annual Meadow Grass  Established
 Barren Brome  Established
 Blackgrass  Established
 Volunteer Cereals  Established
 Wild-oat  Established
 Common bent  Established
 Common Couch  Established
 Sweed Vernal Grass  Established
Yorkshire Fog  Established
Cock's Foot  Susceptible upto 2 leaf
Creeping Soft Grass  Susceptible upto 2 leaf
Field Horsetail  MS germinating
Sedges  MS germinating

Read product labels for full instructions

Application Type - May be made by mounted or knapsack sprayer.

  • Broadcast**  - Apply 4.25L/ha Kerb Flo + 2L/Ha Flexidor 125 mixture in 400L water per hectare
  • Knapsack**  - Apply 42.5ml Kerb Flo + 20 ml Flexidor 125 mixture in 5 Litres water per 100 m22
  • Nozzles - Apply through equipment fitted with medium spray herbicide nozzles as defined in the BCPC system.

Mixing Instructions

  1. Shake well before opening containers.
  2. Add the required amount of Kerb Flo to a half-filled spray tank under agitation.
  3. Add the required amount of Flexidor 125 and complete filling the tank.

Application Timing - 1st October to 31st January. One application per year

Area of Use - Amenity Vegetation

Soil Types -
Can be applied to light, medium or heavy soils.

High organic matter will reduce performance.

Clod free soils will ensure maximum control of weeds.

Soil moisture is needed to help the Flexidor 125 move into the upper 5 cm of the soil, and control the weeds as they germinate.  Dry soils will affect performance.

If mulching - Apply immediately prior to mulching.

Weed Control - Susceptible weeds take from 4-12 weeks to die after application.

Where established perennial weeds such as docks and thistles are already present, then a spot treatment of glyphosate will be needed to remove them.

Refer to label for list of plants that are safe to Kerb Flo and Flexidor 125.

For more information on Kerb Flo or to view product label click here

For more information on Flexidor 125 or to view product label click here

Receive FREE delivery when ordering both products as a bundle, click here for more information and to order

** Amenity Vegetation Only