Pythium Blight on New Grass
Hi. I planted an area of new seed this year, and it was doing very well. Until this weekend.
It is classic pythium blight (grease spot). It is my fault for over-seeding and over-watering during rainy/humid season. I noticed it yesterday, and it spread like wildfire.
I treated today with chlorothalonil, Daconil, a fungicide purported to kill pythium.
Wondering how long it takes for the fungicide to take effect? That is, when should I expect to see the grass stop dying and know it worked?
And... I am not going to over water that patch any more this year. Lesson learned.
Thanks for any experienced info.