Knowledgebase

Dormant Seeding Timing and Watering Advice #889807

Asked November 13, 2024, 7:09 PM EST

I have a quick question about dormant seeding. Should I wait until next month to apply the seeds for optimal results, and is it necessary to water the area after seeding? I can time it on a day I know it's going to rain. I checked soil temp and it's currently 37F, with a 5-day average of 50F. I understand that spring seeding is generally preferred, but I’m interested in trying dormant seeding this year. Thank you very much for your help!

Hamilton County Ohio

Expert Response

I am concerned about your timing. See the FactShhet below. Our winters are so variable with warm spells followed by extreme cold, at this point you might be better off waiting as described by the second FactSheet specific to Ohio. The optimal time for all grass seating is in September. Unless you have extensive bare spots or are willing to vigilantly water this coming summer. You might consider waiting until next early fall.

https://extension.umn.edu/lawn-care/dormant-seeding


Winters with extended warm periods followed by extremely cold periods can negatively affect spring germination of dormant seeded lawns.

Dormant seeding works best when you want to reseed bare soil areas or help thicken up thin lawns. It is not as effective where lawns are thick and dense because good seed-to-soil contact is necessary for the grass seeds to germinate and grow next spring.

The time to dormant seed is important. If done too early, some seed will germinate late in the season and those immature seedlings often won’t survive the winter. Put down your seed while the ground is not frozen, but is still cold enough so germination of the grass seed will not occur until next spring. Usually, this is from late October to mid-November depending on your location.


FactSheet 2 with information specific to Ohio in 2024:

https://buckeyeturf.osu.edu/news/seed-establishment-fall

An excerpt:

Dormant Seeding as an Alternative

If the team decides it's too late for even fast-germinating species, dormant seeding offers another option. Dormant seeding involves applying seed that will not germinate until conditions improve in spring. Typically done in late winter (February-March), dormant seeding could also occur in late fall or early winter, provided a mulch or cover protects the seed from washing away. The aim is to prevent soil erosion over winter (Figure 4) and promote early germination in spring 2025, giving turf a head start as soon as conditions allow.

Jane Ellison Replied November 13, 2024, 8:59 PM EST
Thank you very much for the detailed guidance! I really appreciate it. Just to clarify, it sounds like you’re suggesting that dormant seeding should be done later in the winter, around February-March, as an alternative to mid-November seeding. This timing would allow the seeds to stay dormant until early spring, when they could start germinating with the warming soil.
Since I live by myself, I'm hoping to do this with minimal effort, letting natural winter processes help settle the seeds into the soil. Will dormant seeding during late winter allow the earth's natural freeze-thaw cycle to work the seeds in effectively enough for early spring growth?
When I do this in February, I don't need to worry about watering do I?
Thank you again for your help!
Layla


From: ask=<personal data hidden> on behalf of Ask Extension
Sent: Wednesday, November 13, 2024 8:59 PM
To: Layla Adams
Subject: Re: Dormant Seeding Timing and Watering Advice (#0159723)
 
The Question Asker Replied November 13, 2024, 9:35 PM EST
Hi! I just realized you sent me the University of Minnesota link! I actually reviewed that link before reaching out and have it bookmarked, especially the part that says:
"Put down your seed while the ground is not frozen, but is still cold enough so germination of the grass seed will not occur until next spring. Usually, this is from late October to mid-November depending on your location."
Since the recommended timing for dormant seeding seemed to be late October to mid-November, that’s why I was curious if I might be okay to seed now.
Is the main reason for your recommendation to wait because Ohio can have unexpected warm periods in November, December, and January that might disrupt seed dormancy? Is that what you mean?
Thank you again for your help—I just want to make sure I’m following the best approach for our Ohio climate.
Layla

From: ask=<personal data hidden> on behalf of Ask Extension
Sent: Wednesday, November 13, 2024 8:59 PM
To: Layla Adams
Subject: Re: Dormant Seeding Timing and Watering Advice (#0159723)
 
The Question Asker Replied November 13, 2024, 9:40 PM EST
Yes.  Especially recently, winter temperatures have been very variable.  You would not want to have the seed germinate during a warm spell only to be frozen hard shortly thereafter.  This is especially worrisome as we do not have the snow cover any longer that we once did in Ohio which helps insulate the ground from temperature extremes.  Conditions are much different in Minnesota.  Of course there is no predicting exactly what the weather will be, so there are many unknowns.  Your safest bet at this point is to wait until February or March.  
One always has to be cognizant of keeping newly seeded turf moist.  This is one reason why fall planting is recommended, the fall generally has generous rainfall.  The early spring similarly is a time of year with spring rains, but certainly you will want to keep an eye out and never let the newly germinated seed dry out.
Jane Ellison Replied November 14, 2024, 11:29 AM EST

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