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Old 10-14-2017, 09:28 AM   #1
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New grass seed not growing at same rate


Some big trees had been cut down, and the ground was covered with new grass seed. It was done by contractor.

I guess due to soil quality is quite different from spot to spot, I can see new grass on a few spots, while some grass seed not even germinate.

I have two questions:

1) When new grass (on most spots) reaches 6" and above, I would like to cut it down to 4" (not cutting more than 1/3). But I set mower to 4", I am concerned about those grass grew earlier. When new grass (on most spots) reaches 6", I am sure grass on some earlier spots can reach more than 10". For the first mowing, how can I cut it down from 10" to 4", that is too much. How should I set mower height?

2) I also had over seeding on existing lawn, now existing grass is very tall for mowing, while new grass seed has not germinated yet. Should I wait for new grass seed to reach 6"? Or should I go ahead and mow existing lawn?

Thanks.
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Last edited by VAer; 10-14-2017 at 09:51 AM.
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Old 10-14-2017, 11:01 PM   #2
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Re: New grass seed not growing at same rate


I would go ahead and mow the existing lawn areas but I wouldn't mow the new areas. By looking at your picture looks like the earth that are coming up are the areas in the lower places which would lead me to believe that the places that are coming up better have more moisture. How often have you been watering your new seed? The straw will certainly help retain moisture you still need to water it on a regular basis to help the seed germinate.
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Old 10-14-2017, 11:09 PM   #3
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Re: New grass seed not growing at same rate


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Originally Posted by Msradell View Post
I would go ahead and mow the existing lawn areas but I wouldn't mow the new areas. By looking at your picture looks like the earth that are coming up are the areas in the lower places which would lead me to believe that the places that are coming up better have more moisture. How often have you been watering your new seed? The straw will certainly help retain moisture you still need to water it on a regular basis to help the seed germinate.
Only water a few times, it rains often for more than one week.

Do you think I need to pick up leaves?

Thanks.
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Old 10-15-2017, 12:19 AM   #4
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Re: New grass seed not growing at same rate


Grass seeds sprout at different rates. You can use a weed whacker if the few taller grass areas bother you. If you mow over the seeds, the seeds & hay will be sucked up.
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Old 10-15-2017, 09:29 PM   #5
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Re: New grass seed not growing at same rate


If you have very many leaves they will kill the grass below them because the new sprouts won't get sunlight. If you have just a few it's not a problem. Nucleus needs constant moisture to grow properly.
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