Knowledgebase
Dormant Seeding Timing and Watering Advice #889807
Asked November 13, 2024, 7:09 PM EST
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.
Sent: Wednesday, November 13, 2024 8:59 PM
To: Layla Adams
Subject: Re: Dormant Seeding Timing and Watering Advice (#0159723)
"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."
Sent: Wednesday, November 13, 2024 8:59 PM
To: Layla Adams
Subject: Re: Dormant Seeding Timing and Watering Advice (#0159723)
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.