Cold, Cold, Cold has been the theme over the last week. The coldest weather in nearly 2 decades passed thru our area earlier this week including 2 days of frost.
Since I started at Glen Eagle in 2019, we have only had frost conditions one other time. This week was the heaviest frost I have seen during my time here.
Here are some pictures of frost on the course…
We can’t do much to keep the frost off the grass but we pulled out the covers for the flowers. All of our plants will have some damage (brown leaves/leaf loss) from frost but if we don’t cover the annual plants flowers they will have significant damage and will die. Due to the wind on Saturday, we will see some damage to the annuals but not as much as if we left them uncovered.
Here is the team putting out the covers on Friday…
What Frost Does to the Grass
Frost forms when temperature drop low enough for moisture on the leaf surface to freeze. Keep in mind, that doesn’t mean the air temperature has to drop to freezing, only the temperature on the surface of the leaf blades. When the grass blades freeze, the water inside the plant cells expands, which can rupture cell walls. Once those cells are damaged, they can’t function properly, leading to discoloration and tissue death. This is why we keep all foot and cart traffic off of the turf during potential periods of frost. Having traffic on the turf would certainly cause frozen cells to rupture, making the damage to the turf much worse.
Most of our frost was in the rough which has a higher heights of cut and therefore much more surface area for the frost to form on. The good news is the frost doesn’t kill the plant, only some of the tissue it comes in contact with and that is dependent on how heavy the frost is. It will take a few days to see how much tissue was effected but I don’t expect an extreme amount of damage.
One thing that is very noticeable during cold periods is the substantial color response between turf types, particularly our TifEagle greens compared to the Celebraiton on the reminder of the course.
TifEagle is maintained at very low mowing heights so it can be more vulnerable to temperature stress. With less leaf surface and less stored energy, the plant responds quickly by shutting down and losing chlorophyll, resulting in a brown or off-color appearance.
Celebration is maintained at higher heights and that extra leaf tissue provides insulation so the plant doesn’t go into as much shock therefore resulting in less color loss.
Looking Ahead
Temperatures will still be cool over the next week but not nearly as extreme as we just experienced. The visual impact from the recent frost and cold stress will be noticable for a couple weeks but Bermudagrass is resilient and will recover by pushing new growth and regaining color.
Until the growth picks back up, enjoy the extra ball roll, and please remember to fill divots, fix ball marks and use the 90 degree rule.
I look forward to seeing everyone on the course, and as always, if you have any questions, flag me down or shoot me an email. I always enjoy talking turf!