Weeds are growing inbetween patio bricks...How to prevent!?!?

it_better_be_organicJune 6, 2006

These things are so annoying. Took sooo long to dick them all out of the cracks.

Now, we want to PREVENT them from coming back.

What is there to do? Pour vinegar very very liberally inbetween cracks? Lay down sulfur in the cracks? Keep in mind these cracks range anywhere from 1/16" wide to 1/4" wide.

Any help would totally be helpful...these little crevice weeds are eeeviilll, and my fingers are sore from scraping and pulling them...

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Those "weeds" are growing there only because there is some medium for them to root in. The most permanent solution is to clean this growing medium from those spaces, although as dust from the air and organic matter that accumulates in the spaces will allow "weed" seeds to once again germinate there sometime in the future. Vinegar, applied to the foliage of those "weeds" can kill them, a flame will also kill "weeds", but those allow more organic matter to accumulate in the cracks which means more weed growth in the future. Appying any of the "weed" or plant killers sold today is not an acceptable organic solution.

    Bookmark   June 6, 2006 at 7:41AM
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pablo_nh(z4/5 NH)

If you can clean the stuff out of the cracks, you can backfill them with crushed stone. Many home building centers sell an epoxy that can be used to set the stone dust.

If you don't like the idea of epoxy between the stones- then you're stuck with periodic treatment with vinegar, etc.

    Bookmark   June 6, 2006 at 8:47AM
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Filling with stone isn't an option. The cracks were already fillled with gravel and the weeds grew right through it w/o a problem. Looking for a simple solution and so far it seems like mass amounts of vinegar to prevent them from growing back is the best solution. Either that or spreading sulfur in the cracks.

    Bookmark   June 6, 2006 at 5:38PM
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pablo_nh(z4/5 NH)

Crushed stone, or maybe sand- might be able to get it to fill in a bit, then set in epoxy

    Bookmark   June 6, 2006 at 7:39PM
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buffburd(z5 NY)

Mix a bunch of salt with water, make up a good strong batch, and pour/spray it on the weeds, they'll be done by the next day.

    Bookmark   June 7, 2006 at 10:08PM
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Salt is ok to kill weeds but not to prevent them, I would think, because the salt would wash out probably even quicker than the vinegar once rainwater hits it..

    Bookmark   June 8, 2006 at 6:44AM
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but then again, salt is very easy to spread.....hmm..this is a good idea, might consider it instead of vinegar

    Bookmark   June 8, 2006 at 7:37AM
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Something is going to grow in the cracks, so crowd the weeds out by planting something pleasing instead. I have creeping thyme and violets volunteering between pavers where I had potted plants sitting last year. I like it much better than the grass that was trying to take over, so I'm going to spread seeds deliberately when I finish my patio this summer.


    Bookmark   June 8, 2006 at 4:27PM
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It won't help to prevent those seeds from germinating, but once the weeds are there, you can pour boiling water on them to kill them immediately. It saves on the nails and fingers. I always pour my leftover corn water on our brick walkway.

    Bookmark   June 14, 2006 at 10:29PM
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laceyvail(6A, WV)

Corn gluten is very effective as a preemergent and is organic. I put in a stone terrace around my new house a year ago, and planted a variety of low thymes, Armeria, small dianthus, etc. in between the stones. But to keep down grass etc, I applied corn gluten liberally. It worked very well.

    Bookmark   June 19, 2006 at 1:55PM
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The thyme is a good idea. I've heard of packing lime dust in between the pavers. I guess this stuff packs tight enough to prevent most weed emergence and maybe even raises pH high enough to delay germination. Who knows, but it seems like a viable option.

    Bookmark   June 26, 2006 at 11:08PM
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