How to Control Poa annua In Your Region

By Dean Mosdell, Ph.D., technical services manager for Syngenta

Don’t let Poa annua sneak up on your fairways this fall. With the Syngenta GreenTrust® 365 Poa annua Assurance Program, you can liberate your fairways from Poa annua infestation, mottled appearance, seedheads and transition issues with confidence. This program provides customized solutions for both overseeded and non-overseeded fairways.

  • Apply Barricade® brand herbicides, Monument® 75WG and/or Princep® Liquid herbicides from September to December, depending on location, for excellent pre-emergence and post-emergence Poa annua control. This program applies herbicides with different modes of action to help manage herbicide-resistant Poa annua populations.

South and West - Overseeded fairways:

  • Apply Barricade six to 10 weeks before overseeding, depending on location, to help control Poa annua before establishment.
  • When 85% ryegrass cover is achieved, apply Trimmit® 2SC plant growth regulator monthly for suppression of Poa annua to help maintain healthy ryegrass.  

For a complete list of assurances and program information, visit

©2020 Syngenta. Important: Always read and follow label instructions. Some products may not be registered for sale or use in all states or counties and/or may have state-specific use requirements. Please check with your local extension service to ensure registration and proper use. Barricade®, GreenTrust®, Monument®, Princep®, Trimmit® and the Syngenta logo are trademarks of a Syngenta Group Company.

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