Weeds in Gravel, Help! Flowers Near by

jane1149(6)April 29, 2007

Hi, I have a problem. My mother has a large garden that has several raised beds for flowers and tomatoes. The walkways around each raised bed are white gravel. Under this gravel is a layer of plastic to keep out the weeds in the gravel. This worked great until the last two years. Now, mom has many small weeds coming up all over the gravel. She wants us to clear the weeds for her. That is fine but I want to do it the right way the first time. If we spray Roundup on the weeds, since the weeds are growing on top of the plastic, will the roundup wash down into the flower beds (slight slop to the entire garden area) and kill some of the flowers later that are in the beds?

Is there a better product? I thought you could spray roundup directly on any weed and it would go no further than that weed or spot? Or should we just rake the weeds out and stay away from anything that might wash into the beds near the gravel walkways? Any help would be appreciated. She is scared to death of us accidently killing her flowers and tomatoes. Thank you!

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Judy_B_ON(Ontario 5B)

Round Up kills by contact with the green parts of a plant, won't damage roots by washing. You can rake the weeds out of the gravel, pull them out one by one or use Round Up.

    Bookmark   April 29, 2007 at 10:25PM
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Over the years that this gravel has been down dust from the air and bits of organic matter have filtered in between the stones and those weeds you are seeing are germinating and growing in that soil. Spraying with a plant poison is simply attacking the symptom of a problem, plants growing where there is soil. The long term control here would be to remove the stone (gravel) and wash the soil out, and then replace the stone. Spraying with some plant poison will kill those "weeds" and the dead plant material will, eventually, filter down between the stones adding more material for plants to grow in causing you to have to buy more plant poison to control the plants growing in that soil that is being created there.

    Bookmark   April 30, 2007 at 7:54AM
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davidandkasie(Z8 MS)

ortho ground clear will stop the problem for several years if applied correctly, but as kimmsr pointed out above the only real way to stop it is remove the gravel and redo it. if you use the ortho, be careful as it WILL sterilze all soil it contacts. best to use RU and repaet as necessary.

at our tower sites we put down a layer of THICK fabric before the gravel goes down. this stops the gravel settling in and keeps weeds at bay for years. even so, after several year they start to grow and the only thing to do then is spray them or redo the gravel.

    Bookmark   April 30, 2007 at 10:51AM
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Thank everyone very much. I have printed out the suggestions and will follow-thru!

    Bookmark   May 2, 2007 at 7:05PM
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