Frost = dormancy ?

Cool season grasses like Kentucky Bluegrass, Fescue & Rye
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corneliani
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Frost = dormancy ?

Post by corneliani » Fri Nov 08, 2019 11:52 am

With this upcoming cold snap finding its way deep into the south, and my renovation being barely a month young, how much thought should I give to grass seedlings staying 'woke' after 2-3 nights of 20+ degree weather? I've read that frost is the biggest trigger to dormancy but other than this cold snap we'll be pretty average going into Thanksgiving (high 50's-60s, low 40's).

I guess I'm wondering if I should keep pushing these little guys throughout Nov or if this cold snap will lullaby them into hibernation. What do y'all think?


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NJ-lawn
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Re: Frost = dormancy ?

Post by NJ-lawn » Fri Nov 08, 2019 11:55 am

It’s all about soil temperatures. Root growth ceases between 33 -40 degrees
Last edited by NJ-lawn on Fri Nov 08, 2019 1:22 pm, edited 1 time in total.

Green
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Re: Frost = dormancy ?

Post by Green » Fri Nov 08, 2019 11:58 am

I think you mean awake. Sorry--grammar patrol.
But no, the frost won't make them go dormant right away if the daytime temps and sunlight level is still high enough. That's what influences soil temps, mostly. You generally get Winter dormancy once 4-inch soil temps hit 40-36F, consistently.

Your temps in the long range forecast you posted are about where mine were a month ago, and it's still growing. Not for much longer, but still growing. We're hitting 20 tonight and the high today is 36, but one or two days of Winter cold won't cool it down to below 40.
Last edited by Green on Fri Nov 08, 2019 12:05 pm, edited 10 times in total.
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Dawgvet
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Re: Frost = dormancy ?

Post by Dawgvet » Fri Nov 08, 2019 12:07 pm

Green wrote:
Fri Nov 08, 2019 11:58 am
I think you mean awake. Sorry--grammar patrol.
Us old timers have to keep up with the slang. :D
A secondary definition of “woke” is:
“In mainstream use, woke can also more generally describe someone or something as being "with it."
So basically, is his grass seed going to stay “with it” ( survive) after frost.
You answered his question though. Seems you are pretty “woke” your self.
Last edited by Dawgvet on Fri Nov 08, 2019 12:14 pm, edited 1 time in total.

Green
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Re: Frost = dormancy ?

Post by Green » Fri Nov 08, 2019 3:33 pm

Dawgvet wrote:
Fri Nov 08, 2019 12:07 pm
Green wrote:
Fri Nov 08, 2019 11:58 am
I think you mean awake. Sorry--grammar patrol.
Us old timers have to keep up with the slang. :D
A secondary definition of “woke” is:
“In mainstream use, woke can also more generally describe someone or something as being "with it."
So basically, is his grass seed going to stay “with it” ( survive) after frost.
You answered his question though. Seems you are pretty “woke” your self.
Yeah. In my early 30s, and I already feel old as far as new slang goes. I'm not going to use that word, ever. Not a fan of it.
Last edited by Green on Fri Nov 08, 2019 3:34 pm, edited 1 time in total.
Front: Northern mix - mostly TTTF, KBG, TTPR. Back: Firecracker and Bullseye TTTF with America, Rugby 2, Bewitched KBG. Upper Side: Mostly TTPR, KBG. Lower Side: similar to front. Low-input: TF/FF, KBG, PR. Always seeding somewhere or fighting Triv.

JP900++
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Re: Frost = dormancy ?

Post by JP900++ » Fri Nov 08, 2019 6:06 pm

green
No kidding. Try being 50.

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Re: Frost = dormancy ?

Post by Alias-Doe » Fri Nov 08, 2019 10:00 pm

Had a couple days in the 20’s and 30’s in Delaware but grass still growing like it’s September . As long as you get sun with daytime temps above 30 you’re good .

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