
Springtime in Highlands is always an exciting time! However, the golf course greens are rolling bumpy and slow. Why is that?
First, the height of cut of the turf right now is 0.135" compared to our summer height of 0.115". This is a pretty big difference. The reason for this is because April isn't a time to be pushing turf for performance. Rather, the grass which has just come out of winter dormancy a couple weeks ago, needs time to develop a deep root system that will sustain it through the summer. Soil temperatures are still on the cooler side and even though our day time air temps are 70*F, the soil temperature is far from optimal yet. It takes time, and pushing turf too hard now, will lead to a lot of trouble in the summer. Early April is too soon to open a golf course in a cool season climate like Highlands. HCC is the first golf course to open in the area. Most are May.
Second, the greens are healing from spring aeration. This is the most critical cultural practice we do, to reduce organic matter below the greens. Failure to do so, will result in soft, soggy greens that would be unacceptable to our membership.
Third, the Poa annua on our greens is producing seed head. We are on a program using plant growth regulators to reduce seed head production of Poa annua. However, the results can be mixed because that science is not completely understood and there are many factors that affect it. In short, the seed head produced by the Poa annua (better known as annual bluegrass) creates a surfaces of varying heights compared to the surrounding Creeping Bentgrass, that requires warmer temperatures to resume growth.
The final and forth reason the greens aren't smooth this time of year, is caused by winter itself. In a sand based greens, a winter of freeze-thaw cycles creates uneven putting surfaces. In April, we do a lot of lightweight rolling to smooth the putting greens. However, it takes time and isn't accomplished by rolling one time.
To conclude, spring is great in Highlands, but it must be met with reasonable expectations. Rest assured in another 2 weeks or so, we'll be where we need to be for the season!