Print page Total herbicide

Valdor® Flex UK

Total herbicide

Valdor® Flex UK

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Product Overview

Valdor® Flex is a residual, pre-emergent, herbicide that controls a broad spectrum of weeds.

When applied prior to germination, depending on the weed species to be controlled, Valdor® Flex keeps the soil weed free for up to 4 months. The product is a combination of 2 active ingredients, Iodosulfuron-methyl-sodium and Diflufenican (DFF), in convenient pack sizes. These active ingredients complement each other and improve the result compared to being applied individually.

Valdor® Flex can be applied to all permeable surfaces and railway ballast to provide effective weed control in a number of environments from industrial sites to publics spaces. If weeds are present Valdor® Flex can be applied with glyphosate or a fatty acid to achieve control of existing vegetation.

Product Description

Key Features

 - Ideal for use by local authorities, county councils, highways maintenance, vegetation management contractors, landscapers and many others
 - Due to long residual activity, Valdor® Flex requires less frequent applications. Reducing the amount of herbicide applied to achieve a weed free environment
 - Reduced risk of weed resistance by different modes of action

Key Benefits

 - A total, residual, pre-emergent herbicide
 - Combines new and trusted active ingredients Iodosulfuron and DFF
 - The 2 active ingredients have a complementary effect for greater weed control
 - Residual effect for up to 4 months
 - Great tool for resistance management
 - Convenient 500g (1ha) and 10g (200m2) pack sizes
 - Can be mixed with glyphosate or fatty acids for post-emergent control

Valdor® Flex contains 360g/kg diflufenican and 10g/kg iodosulfuron-methyl-sodium (MAPP19033) use plant protection products safely.  Always read the label and product information before use. Pay attention to the risk indications and follow the safety precautions on the label.

Use & Safety

When to use

January February March April May June July August September October November December

Application rates and delivery

Preparation of spray solution

Check and calibrate the sprayer, before starting treatment. To prevent a surplus of spray fluid, Carefully measure the surface to be treated and accurately calculate the required amount of spray fluid.

Proceed as follows:

  • Fill half of the spray tank with water
  • Add the required amount of Valdor® Flex to the spray tank
  • Agitate before use
  • Top-up water to required amount


Valdor®Flex testimonial

Alan Abel, Complete Weed Control South and Central Wales

“Putting Valdor®Flex to the test on a heavily weeded gravel site at an international airport was a chance to find out if it would live up to expectations.

“Long-lasting residual control and ability to minimise resistance were two qualities we were looking for in the product, and we were very impressed by both aspects. 

“Herbicide resistance is becoming a real issue in the amenity sector, so the fact the product brings new chemistry to our armoury is key. We also found it was particularly clean and easy to work with. There was no foaming in the tank, so the job was swiftly completed.

“In this trial we combined Valdor®Flex with glyphosate due to size of the weeds.”



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