cryption said:
Looks like take all root rot to me, hit it with some Disease-X fungicide
Like everyone said above, TARR.
1.) Remove the dead grass
2.) Apply Scott's Disease Ex. Reapply a few weeks later.
3.) Fertilize based on what's recommended locally for this time of year (I'm trying Milorganite all summer this year)
4.) Bag clippings until grass is looking healthy.
Everyone in Houston had this issue this year with their St. Augustine if they didn't get rid of the dead crap this last fall/winter. Reasons why it all died: last summer's drought/watering restrictions, decent freeze this winter, not dethatching/removing the dead grass prior to temps getting warm, then the thatch causing fungus to thrive.
I used a metal rake to remove as much of the dead grass/thatch as possible (after mowing on the second lowest setting). Then I applied my spring fertilizer (15-4-10) and Scott's Disease Ex. Within a week I could tell a night and day difference. A few weeks later I applied Milorganite and a second application of Disease Ex. I also hit it all with some Southern Ag Liquid Iron since some of my yellowing looked like iron chlorosis. The dead spots have now mostly filled in (I did cheat and buy some plugs/sod to help in the problem areas). Now my yard is nice and thick, and mostly a deep dark green.
Also, if she has a sprinkler system, see when (time of day), how long and how often it's going off. Make sure it's going off around sun rise. This ensures that it will soak in, while not sitting on the blades all night (from evening waterings) causing more fungus to grow, and prevent losing it all to evaporation if it's going off during the day. Less frequent (two or three days per week vs. seven) at longer durations will force the roots to grow deep. Frequent watering keeps the top soil moist and shallow roots wont have any reason to grow deep. We don't want shallow roots once we get into summer. Be prepared to extend the durations for each zone in the summer to help the stressed grass (if Texas has any water left at that time).
Here's Neil Sperry's lawn FAQs. He's from Dallas I believe.
https://neilsperry.com/faq-category/lawns/ /W\ Saw 'Em Off! /W\
BTHO tu.
