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Landscaping issues

ThornMartinThornMartin Registered User regular
edited April 2010 in Help / Advice Forum
My wife and I recently purchased our first home. It is a bit of a fixer upper especially when it comes to the yard. Our yard is tiered in the back, we would like to make the bottom most tier a flower bed, however it is proving difficult because the previous home owners laid weed barrier fabric and after years of neglect in some areas the fabric is exposed and in some areas it is buried by several inches of soil with well rooted grass on top of that. In addition, grass and weeds roots have grown through the fabric.

So here are my questions:

1) Can you lay weed barrier fabric over grass and weeds?

2) Should we remove the existing fabric before laying new barrier fabric?
2.a.) If so, is there any trick to removing existing fabric, as it's difficult because of the weight of the soil in some areas.

3) If we were to rent a power tiller, can we till through the existing barrier fabric?

Thanks.

ThornMartin on

Posts

  • TL DRTL DR Not at all confident in his reflexive opinions of thingsRegistered User regular
    edited April 2010
    How big of an area is it?

    TL DR on
  • SkyCaptainSkyCaptain IndianaRegistered User regular
    edited April 2010
    1. You can. Just use a lot of weed killer before you do and realize it'll take a lot of potting soil to cover it back up.

    2. Don't wory about it.

    3. Absolutely do not do this unless you want to pay for repairs on the tiller. While there's a slight chance it'll work, it'll more likely wrap the fabric around the blades and bind it up so tight it'll have to be cut off.

    SkyCaptain on
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  • MetroidZoidMetroidZoid Registered User regular
    edited April 2010
    With the fabric, is it an actual woven / semi-woven 'cloth', or just black plastic? I'm assuming the former, because you said weeds are growing through that. It also sounds like after time, any mulch or soil the previous tenants had on top of the barrier has since eroded, and once that stuff gets some UV exposure it gets toast ... fast.

    Rip it all up. Weeds and dirt clods and all. Anything that hangs onto the fabric, it goes in the dumpster too. Then, you want to consider if you actually want to put down more barrier. Plenty a wonderful landscaping has been accomplished with no barrier to weeds. Take into consideration:
    - A weed-barrier is only blocking weeds that would be coming up (and also seeds, but those are so abundantly produced every year that the few underground are in the minority of problems). Most weeds are little annual bastards that stake their surface claim in fall, sprout up in early spring before everything else, battle it out for nutrients over landscaping plants (well, seedlings and such), and are otherwise assholes*
    - Some weed barrier cloths, well, suck. Despite claims, they don't allow water, or adequate amounts of, through. Along with gas exposure (which soil does do). In short, they fuck up with a soil's natural cycle, along with killing or severely reducing a soil's ecosystem (beneficial symbiotic fungus', worms, etc). Basically sterilizing the soil so that in the future event of wanting to plant there, you have to basically rejuvenate everything and this can take a year or two to get back in sync. Also, there's a possibility you may have to help rejuvenate things now, but if you've got loose dirt, not rotten smells, abundance of small, hairlike roots (or even better, faintly visible white 'hair' roots (which may actually be those aforementioned fungus' as well), you'll be in OK shape
    - Weed barrier still takes maintenance. Got to keep mulch on top of it. It doesn't last forever, so you're looking at doing all this again in 5 - 15 years (you pay more for durability in the cloth)
    - Plus you still need to keep surface seeds from popping up. Which you can do sans a barrier underneath.

    Me, I go for a healthy landscape. Plants, when at their best, will out compete most weeds. Combined with occasional physical maintenance (eg, 'come here ya' bastard dandelion *rip*), maybe some periodic spray to keep weed seeds from germinating at all (labeled as a 'pre-emergent' ... ask your local garden center / nursery what they carry. Plus a bark mulch to keep things looking good (Personally, I say pass on the dyed shit. It never looks natural, it seems as natural and good for the soil as pouring a can of latex on your garden). If you have gaps between large landscape plants, either (A) fill them in with a ground cover plant / annual flower bed / more plants or (B) avoid watering and fertilizing there. Also, don't fertilize more than you need to, and that goes for synthetic or organic fertilizers. Excess just goes to the weeds.

    Oh and a couple things I forgot: You want to kill a section of lawn? Lay down a few sheets of cardboard over it. Leave it for a few months, longer if you pull it up and still see any green. Some of it will be worm-digested, leaving you wonderful tiny piles of fertilizer. The rest you can rake away, and now you have somewhat virgin land.

    And no, don't go through the barrier with a tiller. You'll just have strips of black shit in your soil for what seems like forever. Oh, and also possibly fuck up and pay out the ass for, a new tiller. Not fun.

    *The exceptions are perennial weeds, which range from troublesome grasses (depending on your area), to just unwanted plants (hell, a rose can be a weed if you don't want it), or worse. Like sedge grasses. Those are a bitch.

    MetroidZoid on
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  • KotenkKotenk Registered User regular
    edited April 2010
    Just for the record, this is the first time I've seen this thread on H/A where it wasn't regarding body hair.

    Kotenk on
  • MetroidZoidMetroidZoid Registered User regular
    edited April 2010
    Kotenk wrote: »
    Just for the record, this is the first time I've seen this thread on H/A where it wasn't regarding body hair.
    3) If we were to rent a power tiller ...

    Serious machines for serious business

    MetroidZoid on
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  • ThornMartinThornMartin Registered User regular
    edited April 2010
    The area is quite large and slightly sloped, about a total of 400 sq ft. I was told previously that because of the slope we would want to lay the weed barrier fabric to prevent erosion.
    (and yes, it is a woven fabric not plastic.)

    ThornMartin on
  • MetroidZoidMetroidZoid Registered User regular
    edited April 2010
    A good groundcover planting will do better at holding back erosion than weed barrier. Check with a local nursery; you want a groundcover that is suitable for that area (whether it's full sun, shade, dry area, wet, etc), and probably one that spreads fast. And avoid shallow roots, because that's not going to help you much. It may cost a little more than weed fabric, but you won't be worried about replacing it down the road. Just my two cents.

    MetroidZoid on
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  • mtsmts Dr. Robot King Registered User regular
    edited April 2010
    i would rip out the old stuff if only because it looks like shit if it shows through/tears up etc.

    everything you do to the house you should be considering how it might affect the resale.

    mts on
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  • DjeetDjeet Registered User regular
    edited April 2010
    You could tear it all up but that would be a massive pain in the ass. I'd use a "natural" weedblock called the lasagna method. It's explained here, but that's a rather involved set of layers for a deep raised bed. I did it for a ground-level bed with a few layers of overlapping newsprint wetted down, grass clippings (even pulled up weeds), compost, and then mulch, resulting in a bed about 6-8" deep. After a week or 2 of alternately drying out and watering the whole thing pancaked down to a few inches deep (the longer you wait the more the weeds/grass underneath will solarize and die/breakdown). Then I selected my plants, arranged them on the bed where I wanted to plant them, then planted them by digging a hole through the "lasagna" layers, through the newspaper into the underlying soil. Backfill with some amended soil (50/50 original soil and amended potting soil). And once everything is planted, mulch and fertilize if desired. You'll still want to weed the bed regularly, but once your plants have well established themselves less weeding will be required (but still check regularly).

    The nice thing about this method is all the components eventually break down into soil.

    It's been about a 1 year 8 months since I planted a bunch of Vinca and Jasmine and with a minor amount of regular weeding (I check everytime I mow) the Vinca has taken over the entire bed and will likely take over most of the lawn under the tree in a few years (something I was hoping would happen). I did it for groundcover, but you could do it with other plantings.


    You can use a fabric weedblock to do the same thing, but it may inhibit the plantings from spreading, particularly creepers that send out tendrils that want to root.

    Djeet on
  • GoofballGoofball Registered User regular
    edited April 2010
    <snip>...some periodic spray to keep weed seeds from germinating at all (labeled as a 'pre-emergent' ... ask your local garden center / nursery what they carry...<snip>

    This right here is what you need to do. Pull that existing worthless "weed barrier" fabric and don't bother replacing it. The only thing that barrier plastic/cloth is good for is popping up in the most annoying and hard to re-cover way possible. A pre-emergent spray applied every year in the spring and spot treatment by either old fashioned pulling or using something like Round-Up is the best way to go as far as stopping weeds.

    Goofball on
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