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What does too much grass seed look like?

11 years ago
last modified: 11 years ago

I put 10 pounds of tall fescue grass seed down on my 1,500 square foot lawn on Thursday. A few hours later, a massive storm comprised of strong winds and torrential downpour annihilated my work. As a result, I used another 5 pounds of seed to lightly overseed all areas, and moderately seed the bare areas. So 15 pounds of seed in total, which seems like a lot, but my lawn was in bad shape, I vigorously dethatched it manually, and it was very thin in most parts. I also had several large bare areas, so it wasn't strictly overseeding.

Should I be worried? I've read over and over about the dangers of applying too much seed. Some of the seed is likely buried too deep and much of it was washed away.

Section 1:

Up Close:

Section 2 (Bermuda Infested):

Section 3 (Most liberal seeding):

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Comments (13)

  • 11 years ago

    The dark color of the soil is from a combination of top soil and peat moss.

  • 11 years ago
    last modified: 11 years ago

    I'm on an iPad so perhaps that is limiting me, but outside of the second pic I don't see any seed. I just overseeded the heck out of my backyard so I am interested in the replies as well. In my thread you can see seed shots, I dropped a lot down (probably double bag rate).

  • 11 years ago

    @morpheuspa or anyone. If one were to say, have seeded well beyond 10 pounds per 1500 sq ft, would it make sense to spray with Spectracide fungus like this one ? Even before anything starts to appear? This would be on week old seed/lings.

  • 11 years ago

    Too harsh. Plus that contains insect control, which I'm not a fan of--and it's another stress on the seedlings, which are unlikely to be completely pleased with a fungicide.

    The first question here is...how "well beyond 10 pounds per 1,500 square feet?" Anything up to 15 is completely fine. Anything up to 20 or a bit more I doubt you'll have too much trouble with. Problems can appear at any seeding rate (I've had damp off fungus when planting 1 seed per square inch for annual propagation), but risks rise dramatically as the number of seeds per square inch rises.

    Weaker fungicides are fine in this particular instance as damp off fungus isn't particularly sturdy. Daconil and Triforine will both work (Daconil better than Triforine).

    You can even defeat damp off fungus with a little sprinkle of cinnamon powder in very small areas. Indoors, when seeding annuals, I use the cinnamon as the least toxic alternative since I have to breathe the air in here. It's impractical for lawns.

  • 11 years ago
    last modified: 11 years ago

    I'm hijacking OPs thread so I apologize, but thank you for reply morpheuspa. I put down 10 pounds of Pennington tall fescue blend, 85% germination rate. Area about 800 square feet. I calculated a bit off originally (mental lapse).

  • 11 years ago

    So about 12.5 pounds per thousand equivalent. Off the cuff, there's a high probability of getting away with that completely unscathed as the rate is high but not completely unreasonable. The grasses will naturally thin a a bit as the stronger ones outcompete the weaker, but that shouldn't set off any severe problems.

    If it does, a spray of (cheap) Daconil should set your lawn to rights. And as I said above, it's a numbers game. You can end up with damp off running rampant even in an under-seeded bed, it's just more likely in overly heavily seeded areas.

  • 11 years ago

    Thanks! I'm panicking for no reason. The daconil I am looking at online says not to use on home lawns, is there a different variety?

  • 11 years ago
    last modified: 11 years ago

    (Cough. Daconil is not rated for home lawns and it would be terribly, terribly wrong of me to suggest that the lowest mix would kill the fungus without harming your sprouts, now wouldn't it? So I can't suggest that you mix 1/4 tsp of Daconil in 1 gallon of water and spray the seed bed lightly, with that mix to go around 500-1000 square feet).

    Ahem. Almost any fungicide rated for home lawn use will take out damp off fungus (it's helpful to know which fungus it is, as there are several, but most sprays are wide-spectrum enough to do it regardless).

  • 11 years ago

    Gotcha, thanks again!

  • 11 years ago

    Perfect. Thank you.

    Will update when I see some green peach fuzz on the lawn.

  • 5 years ago

    Dave you didnt update! Lets see the fuzz!

  • 5 years ago

    Damn I hate when people don't care anymore and don't follow up but I guess it was fine then