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Keeping weeds out of patio expansion seams

Posted by instar8 Z 5 N.IN (My Page) on
Fri, Apr 17, 09 at 17:02

I would've searched for this, but had no idea what terms to use!
I'm hoping there is a product that one can put in the expansion seams of poured concrete patios, driveways, etc, to keep weeds from growing there? Like I said, i'd search, but would appreciate any input into the best such product from those in the know!

Thanks in advance for your help!
Lynn


Follow-Up Postings:

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RE: Keeping weeds out of patio expansion seams

  • Posted by laurell 8 - Washington (My Page) on
    Fri, Apr 17, 09 at 17:58

I've seen people just spray round up into the seams periodically. Of course it's not the most organic method, but it works.


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RE: Keeping weeds out of patio expansion seams

I resisted using a non-selective herbicide like Roundup for a long time; hand digging and prying between patio bricks and driveway seams instead. Roundup is inexpensive and effective and readily available - just read and follow the label directions.


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RE: Keeping weeds out of patio expansion seams

fill the expansion gaps with a flexible substance like a polyurea gel.


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RE: Keeping weeds out of patio expansion seams

I use a gallon of vinegar mixed with 2 cups of salt and apply it monthly to the cracks. You may have to do some scraping and pulling of some weeds, but it works well.


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RE: Keeping weeds out of patio expansion seams

Guess i shoulda been more detailed...I used Round-up for the lasyt couple years, but i worry about it running off into the ponds downhill, plus there're a lot of amphibious creatures around...i thought there might be some physical barrier they've come up with, salt would be an option...

Thanks all!


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RE: Keeping weeds out of patio expansion seams

Salt getting into the ponds downhill could be potentially damaging, too. Plus I wouldn't be putting salt on a concrete driveway - though it takes time, it has its adverse effects.

Some people claim boiling water works - if you're of a mind to lug it from the stove to the driveway.


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RE: Keeping weeds out of patio expansion seams

Distinguish between preventing and killing. Prevention requires a barrier or a pre-emergent herbicide or potion--you could sprinkle pre-emerge granules into the cracks. Can kill by pulling, or with flame, or herbicide, or various potions as above.


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RE: Keeping weeds out of patio expansion seams

The least damaging to the environment method when using an herbicide it to paint it on with a paint brush, touching the weed tops lightly. No need to spray or pour.

When faced with down on-the-knees weeding, use a linoleum knife as the weeding tool. It easily slips into tight spaces and greatly helps to loosen stubborn weed roots.


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