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Thick & Tall Dark Green Patches

3867 Views 15 Replies 15 Participants Last post by  jayj83
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I noticed these last spring, but they seem way more aggressive this spring. Dark green patches that were the first thing to green up and start growing a couple weeks ago. I mowed everything last weekend do the rest of the lawn is just waking up this week. These patches are super thick and dark green and growing fast(a few inches taller than everything else already). I know these aren't close up pics but any idea what this would be from? Specific seed taking hold, oddity with the soil, dog causing growth instead of killing spots, etc.?





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Looks like dog urine inspired spots, to me. I get the same thing with some spots about 3 weeks ahead of the rest of the lawn. You'll probably want to mow those parts at double the rate of the rest of the lawn until it catches up.
stevehollx said:
Looks like dog urine inspired spots, to me. I get the same thing with some spots about 3 weeks ahead of the rest of the lawn. You'll probably want to mow those parts at double the rate of the rest of the lawn until it catches up.
Gonna have to train him to spread the love next winter
I have the exact same situation and I believe it's dog related.
I got the same thing happening by my curbside turf, a lot of dogs being walked past my house every day so that has to be it, extra dog urine fertilizer in some spots which I do not like, since it's still relatively cool by me it should be harmless but in the heat of the summer those dog spots will kill the grass.....
Or different grass used in this area. Possible "clumping type". If same grass... extra fertilizer applied here
I dont even have a dog and fight these spots every year because ALL my friends have dogs :mad: Some of my friends are aware of the damage dog urine can cause and have trained them to go off the grass which is great but some others are clueless and I have gotten in the habit of having the hose ready or turning the sprinklers on after they leave to help limit these spots.

End of the day, no lawn is perfect and in my eyes no point in having a nice lawn if you cant have friends over to enjoy it! I am also a sucker for dogs! ;)
This was a light bulb moment for me about two years ago. I noticed that the area of my lawn where my dog peed remained green for the hole winter. So I used an aquarium tester to test the area directly beneath the greenest grass for nitrates and it showed that it was high in nitrates. Next I begin taking my dog to a single spot in the front yard which was dormant and brown. Low and behold, it turned dark green in the middle of January. Who new your grass could still be green in the winter. Evidently it can take a lot more nitrogen than I thought in the cooler months. I then began using a fast release fertilizer in the winter and was able to turn my whole lawn green. The result was a green lawn in February and a thicker, deep green lawn in the spring well before my neighbors.
HoneDiggs said:
I dont even have a dog and fight these spots every year because ALL my friends have dogs :mad: Some of my friends are aware of the damage dog urine can cause and have trained them to go off the grass which is great but some others are clueless and I have gotten in the habit of having the hose ready or turning the sprinklers on after they leave to help limit these spots.

End of the day, no lawn is perfect and in my eyes no point in having a nice lawn if you cant have friends over to enjoy it! I am also a sucker for dogs! ;)
It could be something like Tall Fescue as well…it has the right shape from a distance…I get this living next to a field. Good news, easy to see…bad news, this one in particular needs glypho and mechanical separation.

It may not be tall fescue, but without something peeing in your yard, this would be my guess, or something like it.

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My dog is trained to not urinate in the yard but I have been fighting the bunnies for a few years. Myself or my dog gets rid of one and seems that two more appear. Any more friendly solutions to keeping bunnies off the lawn.
My dog is trained to not urinate in the yard but I have been fighting the bunnies for a few years. Myself or my dog gets rid of one and seems that two more appear. Any more friendly solutions to keeping bunnies off the lawn.
Pet fox? They gotta eat just like rabbits
When I notice this in my lawn it tells me the lawn can use more nitrogen. cover the dark patches and throw down some urea! Should make it uniform.
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