by Bill Kreuser | Oct 13, 2026 | Blog, GreenKeeper Growth Series
GreenKeeper Growth Series Part 3In the last article in this series, I argued that a thermometer is often a better biological clock than a calendar. Growing degree days help explain why 14 calendar days in July can represent a very different amount of biological time...
by Bill Kreuser | Sep 15, 2026 | Blog
El Niño is strengthening quickly, and the months ahead could bring unusual weather patterns around the world. The US National Oceanic and Atmospheric Association now gives greater than a 90% chance that the 2026–27 El Niño becomes very strong during the Northern...
by Bill Kreuser | Sep 10, 2026 | Blog, GreenKeeper Growth Series
GreenKeeper Growth SeriesThis launches the GreenKeeper Growth Series: an ongoing look at what we’ve learned from 500,000 clipping volume observations. Over the coming weeks, we’ll use this dataset to explore how putting greens grow, how factors like weather, fertility...
by Bill Kreuser | Aug 25, 2026 | Blog
Summer Created a Misleading Growth Surge It has been a hot, humid summer across much of the U.S., and one of the most common questions we’ve received is some version of: “Why is my PGR program not working anymore?” The evidence is usually sitting in the mower baskets....
by Bill Kreuser | Jun 17, 2026 | Blog
GreenKeeper, like the weather apps on your phone, uses extremely high-resolution weather models to estimate current conditions and forecast future weather. These systems combine observations from airports, weather balloons, satellites, and weather radar with...
