Crop Protection

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Roundup WeatherMAX® Herbicide

Western Canada

WeatherMAX LogoRoundup WeatherMAX herbicide is the preferred product for customers who want guaranteed performance to control their toughest weeds in tough conditions. Roundup WeatherMAX is the best choice for any situation. Growers can count on Roundup WeatherMAX to perform and have confidence in their decision, knowing they are backed by the RiskShield™ Protection Package.

Growers across the prairies told us they prefer Roundup WeatherMAX for its:

  • Proven crop safety
  • Unsurpassed and consistent weed control under ideal and tough conditions
  • Superior rainfastness – 30 minute rainfast guarantee
  • Enhanced efficiency with up to 33% less product to handle than the imitators
  • Unparalleled support through the RiskShield™ Protection Package
  • High Concentration Formulation

Roundup WeatherMAX with Transorb® 2 Technology penetrates the weed leaf within minutes and drives all that power down into the roots, giving you the confidence to spray when conditions are ideal - and even when they’re not. Roundup WeatherMAX drives the active ingredient into the leaf faster than ever before – speeding a lethal dose past the leaf surface before weather conditions can affect it. Roundup WeatherMAX is the first herbicide to be backed by a breakthrough 30 Minute Rainfast Guarantee. Now you have more power in all conditions.

You can always rest easy because Roundup WeatherMAX has you covered with the added benefits of our RiskShield Protection Package. The Roundup WeatherMAX 30 Minute Rainfast Guarantee, the All Weather Warranty, the Roundup Crop Safety Guarantee, the Roundup Crop Establishment RiskShare and RiskShare Complete* will ensure you have the backup you need.

Farmers and retailers have proven that Performance, Support and Quality matters as it pays to get it right the first time, especially in variable and uncertain conditions. In 2009 you can count on Roundup WeatherMAX to be the choice for farmers who want to know they will get guaranteed performance on tough weeds in tough conditions.


* RiskShare Complete is exclusively offered to growers who use Roundup WeatherMAX over their Genuity™ Roundup Ready® Canola acres.

RiskShield™ Protection Package applies only to Roundup® branded and other specified Monsanto agricultural herbicides. Roundup Ready® crops contain genes that confer tolerance to glyphosate, the active ingredient in Roundup® agricultural herbicides. Roundup agricultural herbicides will kill crops that are not tolerant to glyphosate. Roundup, Roundup WeatherMAX, Roundup Transorb and RiskShare are registered trademarks of Monsanto Technology LLC. RiskShare Complete is a service mark of Monsanto Technology LLC.