Lawn was healthy in first week of may, and now has growing yellow/white patches over large sections.
Have been watering 25 minutes per zone at night, so i think it’s getting enough water (Montana).
Pictures are lawn now vs early may.
by xWorldSoColdxmm
23 Comments
I’m not providing anything useful but damn, what a view you got there
You water it every night? If so then cut back on the water.
Could need aeration
Overwatering won’t do this; this is something entirely different. Fertilizer burn looks like this. Unfortunately, if it is the fertilizer, water is just activating it more. What products have you applied so far this season? For the fertilizer, what equipment are you using to apply it? When was your turf installed?
There is a clean line between what looks like your property and your neighbors. I feel as though something has gone wrong, or they have treated for something you haven’t.
If you haven’t recently fertilized or changed anything before it started yellowing, grab some of the grass and see if it feels loose or firm.
If loose, cut a small section (6in x 6in square) and check for grubs in the dirt near the roots.
Over watering fungus, I’m going through the same. I would check for grubs, take care of them, then fungicide..
I can’t tell you what’s wrong with your lawn. However it’s recommended not to water your grass at night. You’re inviting disease. Water in the morning. Do you typically have issues with pests? Have you done an insecticide before?
It’s turning brown
Looks like a Colorado lawn. Kentucky bluegrass, ryegrass, fescue combo, and when I lived there, we had a company completely burn the crap out of our yard with fertilizer. The whole time I was there I just ironite and milorganite. De-thatch every year and aerate every other.
Grubs maybe?
definitely a boulder underneath
What. A. View. !!!!!
you didn’t have to flex that view like that
I grow soil for a living, but I don’t grow sod.
I disagree that it’s not caused by moisture.
Could be pythium which is increased during wet conditions between 32-50 degrees. I don’t know what temps are like in that area at night, but Im willing to bet they’re somewhere between that right now. Nightly moisture at the root crown in those temps would cause this or another type of fungal/ bacterial infection.
Also, driving on it or cutting it during wet times would cause those linear lines. If OP mows in that direction, then that would confirm that.
Grass should be given time to dry out before the evening, should only be watered a couple times a week, and she never be mowed when wet or saturated soils.
The whole “water at night time” is only for hot, dry climates. Cool and hot humid climates should water early in the day. Give the grass a good drink before the heat of the day, allowing it to dry down before evening. And then waiting a day or two to even water again
A goal for grass should not be growing green grass. That’s just your indicator of good grass. A goal should be growing a thick root system. If you get a healthy root system then your going to have grass outcompeting weeds and disease. In order to have good roots, you’ve got to manage your soil.
– Unless you’re in a hot and dry climate, grass should be watered in the morning after sun rise.
– sod needs an average of 1-2” of precipitation a week depending on evapotranspiration rate
– it’s best to water to the point of soil saturation and then wait until it dries before watering. Ie: my sandy region holds up to 1/3” of water. If I water 1/3” 3x a week then sod will get enough moisture.
– deep watering with a dry down period cause deep healthy roots that can compete weeds
– daily watering creates shallow roots that stay at the surface
– mow high to encourage root growth instead of mowing tight
– increase soil carbon by using quality compost, worm castings, Humic acids, Biochar and/ or HumiChar
– use an organic fertilizer to feed soil microbes like sustane 8-2-4 (or another local recommendation)
– be aware that the nitrogen cycle slows down when temps are below 50 degrees so be careful not to over feed
Cinch Bugs
Do you own a dog named Clifford?
Mm
*not a professional*
Those lines look so clean I feel like there has to be something under the grass there – like the roofers decided to throw shit off the roof and the grass guys just laid sod right over it kinda thing
It’s already dead – dig into it a bit and see if you can find anything
This to me looks entirely like ascochyta leaf blight. Did it turn nearly overnight? Do you have any pictures of the blades or turf up close? Preferably from the outside of the damage or in newly turning sections?
https://yardandgarden.extension.iastate.edu/encyclopedia/ascochyta-leaf-blight
You a fellow Montanan?
That looks like fertilizer burn to me
Could be grubs but I’m guessing, spray/ soak with cheap laundry detergent, won’t hurt the grass , and if it’s grub worms they’ll go away
What lawn?? I don’t see a lawn