Ascochyta Lawn Leaf Blight in Carbondale
- Core aerate - I aerated heavily in both directions.
- Sharpen mower blades - I recommended this to him.
- Set the mower high and mow infrequently for now.
- Low fertilization - already fertilized - but he did use the natural product, Alpha Lawn.
- Water deeply for 3 days straight, then back to an infrequent, but regular schedule.
- Give it time - a few weeks - and it will recover.
Garfield County Colorado
The recommendations are fine if it is Ascochyta. But the timing and conditions (from looking at Carbondale weather over the past few weeks) aren't consistent with those conditions which incite Ascochyta.
A photo would be helpful (wide angle, of the entire lawn) and then perhaps a closeup of the crown area of the turf.
I have seen a good amount of mite injury on a few lawns this spring - which has been misidentified by some lawn care folks as other problems (Ascochyta, grubs, cranberry girdler). The advice for mites (depending on severity) would be the same as those you made for Ascochyta - except that overseeding would be necessary if the grass was killed (mite injury is often fatal).
Please send a pic or two if you are able? And swipe the turf (press the paper into the turf as you swipe) with a light-colored piece of paper at the border where the green/healthy turf meets the brown grass. If you see a lot of brown or red streaks on the paper, this would confirm mites. Best to do the swipe on a bright, sunny day (afternoon best).
Thank you for the response Tony. I should have took a picture. I drove by the property a few days ago and the grass is coming the back with more green blades coming through the brown patches. I will be in the neighborhood again tomorrow, and I will take another look while I'm there. I will take another close up look at the blades along the edges, and maybe try the paper thing.