Growing Degree Day calculator

Growing Degree Days

Sign-up to receive email alerts when degree days hit a target threshold in your area.

Please register for a Syngenta account or login to view the latest growing degree information for your post code below or create your bespoke GDD...

IMPORTANT - Syngenta website update - Reset your GDD Thresholds

The new fresh look and important upgrades to the Syngenta website does mean that all existing personalised GDD thresholds will have to be reset. 

** Please note that, after an initial glitch, all threshold calculations are now working at the correct 0C, 6C or 10C base temperature you would have specified when the thresholds were set. This will have automatically updated your personal threshold progress with the correct information from the date it was set up.  ** 

Follow the link below to set thresholds and notifications in the same way as previously - including your required bespoke GDD interval and base temperature.

You can set the 'Start' to any historical date to retrieve previous GDD information.   

The system will automatically backdate the cumulative daily GDD from zero if you insert the application date of your most recent Primo Maxx II treatment as the start date. 

GDD now available on Turf Advisor

Growing Degree Days is one of the essential turf management models and tools available on the new Syngenta Turf Advisor app - download now and tailor your dashboard to support all your decisions.

Primo Maxx Reduce mowing

Start your Primo Maxx II programme with GDD alerts

The GDD threshold alerts emailed to you indicate when you can tailor your Primo Maxx II application strategy.

Syngenta Turf website registration

To get all the full functionality of Growing Degree Day calculator thresholds - along with other premium features on the website - you need to register an account.