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Too cold for Overseeding the lawn with KBG ?

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  • Sep 3rd, 2020 8:15 pm
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[OP]
Jr. Member
User avatar
Feb 27, 2017
155 posts
173 upvotes
Winnipeg

Too cold for Overseeding the lawn with KBG ?

Hello....
I have been trying to get my 3 year old sodded lawn back into shape . All my online research led me to believe that early Fall is the best time to overseed cool season lawns. So I waited for fall while I prepped and shopped ( weeds/par3, electric dethatcher, KBG seeds, a whole lot of peat moss, misc rakes and hoses and sprinklers etc). Now it's early fall and the temp here in Winnipeg have plummeted suddenly to single digit evenings. Can I still go ahead with the overseeding plan ? or is it now too cold for KBG seeds to germinate ? I'm a noob to lawncare and any help\advice would me much appreciated.
Thank you

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3 replies
Banned
Jun 4, 2020
1634 posts
1731 upvotes
Clarington, ON
I'm no expert, but everything I've read talks about soil temps. I recall 10 degrees Celsius as being at the low end for desired soil temp. Based on that I would go for it. (I over seeded about a week ago)
Deal Addict
Sep 8, 2017
4627 posts
4880 upvotes
GTA
It depends on soil temperature, not air temperature. Soil is a large thermal mass, so it's temperature changes very slowly compared to the air temperature.

Cool season grasses (like KBG) thrive to germinate and establish in 50-65°F soil temperatures.

Here in southern Ontario, my lawn's soil is still above that. I don't know about in Winnipeg.

Stick a thermometer in your soil and check.
[OP]
Jr. Member
User avatar
Feb 27, 2017
155 posts
173 upvotes
Winnipeg
Thanks for the tip guys..I'm off to poke my lawn with my kitchen thermometer Smiling Face With Open Mouth

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