Last updated October 2026
Privacy
What we collect
- Information you send us. When you request a program, ask a question or sign up for updates, you send us your name, email, facility and site details by email. We use it to respond and to build your program.
- Site settings on your device. The site stores small preferences in your browser, such as day or night mode and the calendar view you last used. They stay on your device.
- Usage measurement. We may measure which pages and tools are used so we can improve them. This does not identify you by name.
What we do not do
- We do not sell or rent your information.
- We do not add you to a mailing list unless you ask to be added, and you can ask to be removed at any time.
Disclaimer
- Program calendars. Program calendars are regional examples, not site-specific recommendations, and may change as programs are updated.
- Read and follow the label. Product labels and state regulations take precedence over any rate, timing or guidance on this site.
- Results vary. Turf response depends on soil, climate, species, water quality and management. Calendars and calculators are planning tools, not a substitute for a soil test or a site visit.
- Availability. Product availability and state registration vary. Contact your Sigma representative for your state.
- Other products. Conventional products named generically in the calendars are the user's own program choices.
Third-party links
Links to GCSAA, universities and published research are provided for reference. We are not responsible for the content of those sites.
Questions
Email [email protected] or call Sigma AgriScience Corporate at (281) 706-8171, 580 Maxim Dr., Boling, TX 77420.
