Why is my overseeding failing over dead grass?
Grass seeds fail to germinate when they sit on top of a dense layer of old roots and dead grass instead of making direct contact with the soil. This prevents the seeds from establishing properly, leaving bare patches that refuse to fill in even after overseeding.
What the numbers show
Counted from the threads quoted below. How we count
- The most recent one is from October 2026.
- This comes up 27.0× more often in r/lawncare than across the site as a whole.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1Raking out the dead sections and reseedingDid this help you?
- 2Dropping the mower and running it over the areaDid this help you?
- 3Using a weed whacker or dumping soil on topDid this help you?
- 4Continuing to water and being patientDid this help you?
- 5Adding new top soilDid this help you?
- 6Using a germination blanket to retain moisture and prevent seeds from rolling awayDid this help you?
- 7Raking and cleaning debris before seedingDid this help you?
- 8Moving the 5-minute watering session to the morningDid this help you?
- 9Core aeration to fix soil compactionDid this help you?
- 10Adding organic matter or nutrients to the soilDid this help you?
- 11Planting native plants or alternative ground coverDid this help you?
- 12Waiting and seeing how it takes after wateringDid this help you?
- 13Cutting losses, mowing short, and overseeding againDid this help you?
- 14Mowing long to take the edge off the old grass to help growthDid this help you?
- 15raking the bare spots clean and loosening up the soilDid this help you?
- 16applying a super light top dressing like peat moss to keep seeds dampDid this help you?
- 17lightly raking seed in to mix it with the soilDid this help you?
- 18Raking bare soil spotsDid this help you?
- 19Overseeding againDid this help you?
- 20Using peat moss instead of straw to cover seedsDid this help you?
- 21Walking over the new overseed before watering to minimize runoffDid this help you?
- 22Starting over with a proper top soil coveringDid this help you?
- 23Covering seed with topsoil, compost, or peatDid this help you?
- 24Using more frequent wateringDid this help you?
- 25Exposing as much dirt or soil as possible before seedingDid this help you?
- 26changing the watering schedule to multiple short cycles throughout the dayDid this help you?
- 27raking existing seeds into the ground to improve seed-to-soil contactDid this help you?
- 28topdressing with compost or higher quality topsoil from a local landscape supplierDid this help you?
- 29treating suspected fungus and pre-germinating seeds before spreadingDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Why isn't my grass growing? I over seeded and only water for 5 min in the evening”source ↗
“I've been watering twice a day 12min each time at 6am/6pm and I've had no germination at all.”source ↗
“I leveled with a mix of compost and masonry sand, put down organic lawn starter, then a cool season mix (95% tall fescue, approximately). The seeding was 13 days ago.”source ↗
“Anyways, seems about 50% of seeds have germinated. The rest are just laying there. What should I do?”source ↗
“Starting to get germination in the aerated holes but nothing on the bare soil where there is seed. What do I do/ how can fix?”source ↗
“Overseeded this area on September 1 and had close to zero germination .”source ↗
“I aerated and put down a generous amount of fescue seed 5 weeks ago.”source ↗
“I did get some germination but it’s patchy and the sprouts don’t seem to be very robust.”source ↗
“The seeds are germinating well over some areas but I have a few areas where I was hoping the old grass would come back but I think it’s just dead and the new seed isn’t filling in as well.”source ↗
“I’m wondering if all the old grass root mass is inhibiting new growth. Should I rake out these sections and reseed?”source ↗
“I have a slope and a hill that is really hard to get good germination.”source ↗
“Unfortunately 7 days later, it doesn’t seem to be really germinating at all.”source ↗
“Really not sure what to do here because it feels like the overseeding got really screwed up by the lack of mowing beforehand.”source ↗
“I’m no expert other than 2 seasons of lawn ownership and trying to redo my own lawn but I see no dirt. No dirt and seed contact. No germination.”source ↗
““I threw down some seed on some paver base aggregate and am seeing no germination. wtf???””source ↗
“This year I made the mistake of buying the bags and the Scotts lawnsoil was basically mulch.”source ↗
“Would raking in the current seeds help or do I need to add more seed since these have been sitting out there for 2 weeks?”source ↗
“I paid someone to do the job last year, they used dusty top soil I'm assuming and I had spotty germination.”source ↗