The cool wet weather the last two weeks is favoring Microdochium nivale, the pathogen that causes pink snow mold (sometimes referred to as Microdochium patch). The color of pink snow mold scars indicates the activity of the patch. Straw colored patches are usually inactive. However, a rust to orange colored band or ring indicates an active patch. Fungicide treatment may be warranted on creeping bentgrass/annual bluegrass greens depending on the weather. As of writing this on Sunday May 14, the wet weather looks to continue throughout this week with temperatures rising into the 60’s and 70’s. The continued moisture will encourage snow mold, but the rising temperatures are not as favorable. However, the next disease just around the corner is dollar spot. Therefore, a large number of fungicides can be applied this week to limit snow mold damage, and provide 14-21 days of dollar spot control.