As courses cleared of snow cover this spring many courses in the Metro area were faced with the death of some of their playing surfaces (greens, tees, or fairways). Dellwood was not immune as we found varying degrees of damage. While our tees and fairways came through the winter in good shape our most notable damage was to the 6th and 16th greens. Most of the damage on these greens seems to have occurred where the water drains off. To speculate on how it occurred can be challenging as these areas were under snow cover for a good 4.5 months. The damage could have occurred as a result of rain back in November, prolonged ice cover, or from a thaw/freeze event in the last 6 weeks.
As we can not change the weather events of this past winter it is of utmost importance to have a recovery plan. As the damage on these two greens was extensive and found throughout the green I felt it necessary to re-seed these areas. Our nursery sod supply is limited which also played a part in deciding to seed. We have gone into these greens and vertical mowed in three directions. This removes some of the dead tissue and creates a seed bed for the Bentgrass seed. Next we seeded the greens in two directions and followed with a brushing. We followed that with a sand/peat topdressing and another brushing. To finish we fertilized with an organic slow-release fertilizer and a soil amendment to aid in establishment of the seedlings. In order for the seed to germinate it requires two things, moisture and warm soil temperatures. Moisture is the easy part of the equation as our irrigation is already charged and operational. In order to achieve the soil temperatures we need we must cover the greens with a greens cover. This is a woven, breathable blanket that will create somewhat of a greenhouse over the surface. It is green in color and will absorb sunlight and warm the soils. Unfortunately it does very little to heat or retain heat in the soils at night, but there use could be the difference between playable surfaces by the middle of May or the middle of June.
We will be taking the greens out of play and using temporary greens while the grass is re-established. Although Bentgrass is a very tough and resilient grass type the seedling stage is very fragile and does not handle traffic. Our plan is to cover these greens until the seed germinates and gets to the point of needing to be mowed. This will most likely take about two weeks depending on the weather of course. We appreciate your patience in helping us achieve the best possible outcome, which is to have our greens back to normal playing condition before summer arrives.
