Sun Valley, Idaho

At a private club high in Idaho’s Wood River Valley — where the course sits near six thousand feet and a freezing night can land in almost any month — winter is less an event than a season-long test. Winterkill, crown hydration, ice, and desiccation all work against surfaces members expect to be ready early.

Director of Agronomy Jason Sigmund answers that test with GreenJacket clear permeable covers on his greens — but the Sun Valley Field Report is really about what he does next. Once the greens are safe, Jason pulls those same covers and carries them out to the fairways winter killed, coaxing seed to germinate when days barely reach the mid-40s and the nights still drop into the 30s. What that buys him is recovery that arrives two to four weeks ahead of the calendar — a clear cover that earns its keep twice. How Sun Valley gets there, in Jason’s own words and in the photographs, is worth seeing for yourself.

The full Visual Field Report is available below.

Read the Full Field Report