Frost damage on Poa annua greens

There is a frost traffic research update from Oregon State University, with photos showing the damage caused in January 2026 from traffic on a Poa annua research green near Corvallis.

Chas Schmid writes: "Preliminary data from this trial indicates that golf foot traffic under frost conditions is causing damage, particularly at higher levels of golf rounds (100 simulated golf rounds. Initial symptoms of turfgrass injury were observed on January 21st and have progressively worsened up to this point. These initial…