GREENKEEPER BLOG
A Thermometer Is a Better Clock Than a Calendar
In the first article of the GreenKeeper Growth Series, we used nearly 500,000 clipping-volume measurements to examine how much putting greens actually grow. One of the clearest environmental signals associated with that growth was temperature. This week, we are taking...
A Very Strong El Niño Is Building. What Should Turf Managers Expect?
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...
How Much Does a Putting Green Actually Grow?
This 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 and PGRs influence...
When 60% Regulation Still isn’t Enough
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....
Hi-Res Surface Organic Matter Analysis in GreenKeeper
Surface organic matter has always been one of the most important—and frustrating—variables to manage on putting greens. We know it influences firmness, infiltration, water holding capacity, and pest pressure. We also know that topdressing and cultivation are our...
Why Your Rainfall Data May Be Wrong: The Challenges of Estimated Precipitation
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...