Why is my KBG / PRG yellow?

Cool season grasses like Kentucky Bluegrass, Fescue & Rye
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alpine0000
Posts: 255
Joined: Tue Jul 25, 2017 6:10 pm
Location: Burke, VA
Grass Type: PRG/KBG mix
Lawn Size: 7500 sq ft
Mower: Toro GM 1600 & Toro Turfmaster

Why is my KBG / PRG yellow?

Post by alpine0000 »

And just some of the blades. But enough of them are yellow to make the lawn look yellow from the street passing by.

Is this just normal for winter? Fungus? Rust? Mowed too short for winter? (1 inch) Lack of nutrients? Too much water (we got tons of rain the past month)? Something else?

We've had very mild temps this winter. No snow yet.

Mix of KBG and PRG.

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Last edited by alpine0000 on Fri Feb 14, 2020 2:32 am, edited 1 time in total.

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The Anti-Rebel
Posts: 222
Joined: Sat Feb 16, 2019 12:18 pm
Location: Delmar, DE
Grass Type: Every Type
Lawn Size: 1.63 Acres
Mower: Toro Timecutter

Re: Why is my KBG / PRG yellow?

Post by The Anti-Rebel »

Dormancy. Completely normal.

Chris LI
TLF Supporter
Posts: 1004
Joined: Fri Oct 26, 2018 10:04 am
Location: Long Island, NY
Grass Type: KBG,TTTF, FF-different mixes
Lawn Size: 5K
Mower: Snapper Hi Vac 21"

Re: Why is my KBG / PRG yellow?

Post by Chris LI »

That looks like partial dormancy with maybe a slight bit of fungus mixed in. With this mild winter, I think a lot of us are seeing similar conditions. The turf seems a little confused on full dormancy. I think you will be ok (and I hope the rest of us, too).

I'm curious as to how many others are seeing similar conditions, so please chime in if you are in the same boat.

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