We live in the White Mountains of Arizona. 7000ft altitude.
We have been fighting with our lawn since we put it in 2006.Finally got a good start with 45 bags of Amend and a fence to keep out bunnies!
Starting a little last year, we noticed a circlular brown out on the east and west ends. Our Orkin guy said it looked like grub worms. I tested for them by digging up patches. None to be found. Treated it anyway.
This year, the brown out has extended the full length of the yard. No amount of water helped, although we did see a slight improvement during our short-lived rainy season.
Now....here is our idea....the brown out is a straight line, running right along the leach lines from our septic tank. The leach line is 4-5 feet below. The grass on the downhill side of the leach line is what is browning out...could what is leaching out of these lines (ick) be making our grass brown out and die?
We talked to a landscaper who told us to aerate, mulch and replant. We did, and the new grass in those areas did the same thing.
Any ideas how to fix, or just kill out the grass and put in rock or something?
Any advice would be greatly appreciated. We are baffled.