Overseeding with KBG???

AggranduserJuly 27, 2014

My plan is to overseed 13000 sq. ft. That didn't take so well from a dormant seeding last late fall. I would like to do it properly this time (in early fall) I am in zone 3 I think? (50 miles north of North Dakota/Canada border).

I have done hours of reading here and this is my plan.
Scalp the area with the cutting deck as low as it will go. ( is scalping it a bad idea? Will it harm the grass that I do have?). Bag the clippings, aerate, broadcast seed, and roll it. Water 15 minutes 3x per day for 5 weeks.

I will be using a quality mix of several KGB seeds from Brett Young Seeds.
Thinking of doing it the last week of August. Is the timing right?
What would be a good starter fert. to use? Milogarnet? Do I put down right before I seed or after?

Would I get better results with a slit seeder instead of aerating?

Thanks in advance.

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"is scalping it a bad idea?" Yes!
" Will it harm the grass that I do have?" Yes!
Those grass blades take in sunlight to make nutrients that feed the roots that produce more grass plants, scalping reduces the amount of blade that can pick up sunlight to almost nothing so nutrient manufacturing is stopped.
If the soil is so compacted that aerating is necessary it is too compacted to sow grass seed. Spread the fertilizer either several weeks before seeding or several weeks after.
How much organic matter is in the soil?
How well does the soil drain?
What kind of life is in the soil?
Seeding onto poor soil usually results in poor germination and disappointment. Be sure the soil in a good healthy condition before seeding.

    Bookmark   July 27, 2014 at 9:04PM
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I was only planning on aerating so that I would get good soil contact and have some seeds fall into the holes.
The organic matter is 14.2% tested by Mid West labs.
I have not tested how well the soil drains but what I can tell you is that almost every pull of a Fiskars dandilion puller I get a worm.

I'm really just looking for the best overseeding technique. I guess I was thinking by scalping the grass it would allow the seeds to get sunlight.
What length should I cut it to just before overseeding?

    Bookmark   July 27, 2014 at 11:03PM
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Very few seeds need sunlight to germinate. They do need moisture and too much sun can cause rapid moisture loss which is why most seed companies recommend a mulch after seeding, or sell seed in a mulch material. I would not cut that grass any lower than I normally mow at, about 3 inches.

    Bookmark   July 28, 2014 at 7:00AM
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