5/6/2018 7:05 PM
Depending on how much damage there is to the greens and are you allowed will determine whether to close or keep open. If you can close, that would be best. I was brought back as superintendent to a course that I had previously worked at and came back to a disaster. About 12 of the greens only had between 60 to 75% coverage with Penncross/poa turf. We were not allowed to close the greens so we quad tined the greens with 1/4 solid tines, then overseeded greens with Penncross at a rate of 1.5 lbs/m, then used lawn slit seeder and set it about 1/8" below soil and went over green in 2 opposite directions, then topdressed greens and dragged the sand in. We then raised our mowing height from 5/32 to 1/4" for about a month. We continued to mow greens about 1 week after seeding and tried to mow in the afternoons on dry turf so that the seedlings would not stick to the rollers or tires. We had great results and after a month, the greens were almost fully grown in with proper fertility and water, and began slowly lowering mowing height back down to 5/32".
We have mostly Penncross/poa greens at the course I have been at for quite some time and I like how aggressive and how quickly the Penncross works. It is more susceptible to dollar spot than some of the new varieties, but I still like it. Depending how bad your damage is, this could also be a good time if you do not like Penncross, to consider switching to another variety.
Good Luck!