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Landscape Fabric/Weed Barrier

Posted by habiem 5 (My Page) on
Tue, Jun 5, 07 at 12:55

Does anyone know if landscape fabric prevents organic material from getting down into the soil? I'm not talking about the black plastic stuff, but rather the actual fabric. Not sure what it's actually made of. What I've seen is made by DuPont. Thanks.


Follow-Up Postings:

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RE: Landscape Fabric/Weed Barrier

It will get into the soil, but probably at a much slower rate. Unless you have something terrible and evil (like knotweed)- you may be better off with shredded leaves or bark mulch.


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RE: Landscape Fabric/Weed Barrier

What are you trying to use it for?

I can think of only one application where I would advocate it - as a resting place for plants in pots, where it would limit the mud from frequent watering, stop (mostly) the potted plants' roots from rooting themselves out the bottom of the pot, and stop dirt, etc., splashing up the sides of the pots, keeping them tidier looking and hopefully stopping any diseases present from spreading. Well, no, I lie, there is another use I can think of - to cover a temporary path that was very muddy, before I decided on a permanent footing or placement of the path. And in commercial conditions/pathways, where you HAVE to water, WANT to have lots of people through the place, and don't want to get their shoes, which may be good ones, wet or muddy - so that's three uses I like it for.

Otherwise, I found it doesn't really let any OM through to the soil and it doesn't stop the REALLY persistant perennial weeds, as light gets through, unless you cover it with mulch. The mulch doesn't really stay on it; the sun degrades it where it is exposed; weeds root anyway, but now their roots are growing into the landscape cloth, so you pull it up with the roots - that's unless you catch ALL the weeds at a very early age - and tree roots will also grow into it, but from the underside.

Do you get the impression I don't like it? Can't imagine why, says she, tongue firmly in cheek!


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RE: Landscape Fabric/Weed Barrier

In most cases that people tend to use landscape fabric (weedmat) I tell them most of the above stories because I have seen these problems first-hand and then I let them know cardboard or newspapers in most cases will do a better job and then apply mulch (your choice over top of this. By the time the cardboard is eaten by worms and the soil web its time for a new mulch as well. I like to put out compost under new cardboard installations to perk up the worms and microbes. I use newspaper 3 or so layers thick for smaller areas but otherwise treat it the same as the cardboard.
I provide free cardboard from the store to my garden center customers to help them and keep it out of the waste stream as much as a I can. Good Luck and Happy Growing whatever you choose. David


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RE: Landscape Fabric/Weed Barrier

I like the stuff (think the brand is De Witt). It lets thru water and fertigation but not OM. But I lay it down for annual use and roll it up for the winter. I'm still using pieces I cut back in '01. Most of my rows are 40 to 60' long and because of the daily high winds here I run 10' lengths of 1/2" rebar down each side to keep it in place. I find it useful in warming soil a bit before summer hits in July and it reduces much of the weeding work. It's not perfect but helps me take care of a large garden. Tom


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RE: Landscape Fabric/Weed Barrier

Yes, I would use it as Tom is - for an annual pathway between beds.


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RE: Landscape Fabric/Weed Barrier

The woven fabric weed barriers do not prevent organic matter from getting down into the soil. It may slow that down but does not prevent it. Rather than landscape fabric something much better is newspaper or cardboard because they will be digested by the soil bacteria and become part of the organic matter you want to add.


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RE: Landscape Fabric/Weed Barrier

I guess my issue at this point is that I put it down earlier this spring around the house in an area we landscaped. We mulched on top of it, but now, my concern is that our clay soil will stay just that. At this point, it's a bit tricky to go back and pull it up after I've got 3+ yards of mulch on top.

Would there be a benefit in cutting some holes in it? That is, in addition to the ones that I had to cut in order to plant. Or just leave it alone at this point?

Thanks.


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RE: Landscape Fabric/Weed Barrier

My experience with it has been the same as dibbit's. It doesn't stop the weeds like it's supposed to and on top of that it's expensive. As far as letting organic material through it, I don't know. My only concern for it's use was weed control.


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RE: Landscape Fabric/Weed Barrier

If you are trying to cut down on weeds, I recommend against using this stuff. The weeds grow through it, in time. My husband and I nearly had heart attacks trying to pull it up after it had been on the ground for a season, after weeds had grown through. Our solution in our vegetable garden has been to put down 6-8 layers of newspaper (not the shiny ads, just regular newsprint which is now printed with non-toxic soybean ink) then top it with straw. It does a good job at keeping the weeds down and can be roto-tilled into garden next spring.


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RE: Landscape Fabric/Weed Barrier

Habiem, since it is down, I would leave it, at least for now. Obviously, the advice from here is not to put down any more. As and how you can - I know, you just put it down, having paid good money for it, and worked SO hard - I would take it up in sections, replacing the mulch as you go. If you can get it out in usable sections, to use in the vegetable garden paths, etc., that would be a bonus. If you don't want to do it this summer, esp. as the summer heats up, and since your plants are now thriving (I do hope they are!), you can wait until fall/winter, after the plants have died back. This would make it much easier to get out from under and around your plants. Not having it will make it easier to add to and "edit" your plantings, since you won't have to contend with the landscape cloth. You can also plant bulbs there if you want, and let them come up through the mulch.


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RE: Landscape Fabric/Weed Barrier

I put a felt like landscape fabric down on some perenial flower beds about 4 years ago. For the first season or two it worked pretty well to control weeds. Presently the decomposed mulch straw etc on top of the fabric has made a nice organic layer that grows weeds like weeds. It was an itnteresting experiment, but I would never do it again. I can't incorporate anything into the soil, and it makes a great home for slugs voles etc.


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RE: Landscape Fabric/Weed Barrier

Question about my use of the landscape fabric:

I created a new plant/mulch bed in my frontyard, cutting out existing lawn area. I just applied grass&weed killer to the area yesterday. Then, I began putting down the landscape fabric. My soil in the mulch bed is awful, as is my lawn......like concrete. But I digress. Presently, there are a few small birch/evergreen trees in the bed, which has a large boulder in the middle, and daylilies on the front side of the boulder. My plan was to add a few inches of screened loam to the bed to raise it up a bit and provide good soil for future plantings. I was going to just add the loam and mulch this summer and probably wait until next year to put in new plants (budgetary constraints). Well, I just began putting down the landscape fabric on top of the cruddy existing soil. And then I was going to add a few inches of screened loam on top of the landscape fabric, and then 3-4 inches of hemlock mulch. Um, did I screw up something here? Should I wait until I put the loam down first before laying down the landscape fabric? Upon review, I am thinking that, while the landscape fabric as laid down right now may prevent the grass/weeds from growing back, the few inches of loam on top of the landscape fabric will only provide hotel accomodations for future weeds that may drift/blow into the mulch bed.


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RE: Landscape Fabric/Weed Barrier

I use quite a bit of it. With the vegetable gardens, I do what skagit goat man does, 70' long x 4' wide strips, leaving a few inches between, and there I have vertical cattle panels. Roll it up in the winter, add compost along the strip I will plant, and then roll it out again in the spring. I've got stuff thats 8 years old now.

I also have a tree border around the property, and started all my trees, (I have over 400), from seedlings. I couldn't afford to use the weed barrier all around, but the areas I did, it doubled the growth rate of the trees. I use in in my orchards, again it significantly improves the growth of the trees. This is over a clay soil.

Flower beds, I dunno, I think they do better with traditional mulches that break down.

I get mine through the Soil Conservancy, a 4' x 300' roll costs about $75, a box of 6" staples costs about $25, and thats enough to do 3 or 4 rolls. Buying it elsewhere costs at least twice that.


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RE: Landscape Fabric follow up

I forgot to add that I would just leave it, put the organic mulch on top, and see how it does. Around here, it is very arid, there is little rainfall, and maintaining a generally stable soil temperature and moisture content will help the plants tremendously. Your milage may vary, but around here, if I could afford to do that in all of my perennial beds, put down weed barrier and cover it with 3 or 4 " of organic mulch, I would.


 
 

 

 


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