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Thread: Planting a green roof

  1. #1

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    At Coastal Maine Botanical Gardens (USDA Zone 5), where I work, there is an information kiosk with a wooden shingled roof. I am going to plant it and am wondering if anyone had had experience doing this type of project. It's about a 45 degree slope, so I plan to place a layer of Promix (perhaps mix in some of those polymer granules that soak up water) with a layer of live sphagnum moss over that to help hold the potting mix in place. I will then put a sheet of that black plastic mesh netting over the entire surface and fasten it down on the edges. I'll cut holes in the mesh where I want to insert plants. Since this may only receive water when it rains, I need to select drought-resistant plants. Sedums, sempervivums, other succulents and chives have been recommended.

    Can anyone make offer any suggestions or make any recommendations? Also, can anyone recommend a source for inexpensive succulents?

    Many thanks,

    John

  2. #2

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    The only info I've ever seen about green rooves is with sod rooves in the Midwest during colonial times. Mainly just thick, heavy grasses... But it sounds like you have a decent plan. Chives and such could grow right through mesh if it isn't too fine.

  3. #3

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    Maybe this site could help.....

    http://www.greenroofs.com/
    \"People place their hand on the Bible and swear to uphold the Constitution; they don't put their hand on the Constitution and swear to uphold the Bible,\" Jamie Raskin, to Senator Nancy Jacobs.

  4. #4

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    hen and chicks can go a while with out water...and are pretty hardy

    thanks

    Brad
    thanks for you imput

    Brad

  5. #5

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    Chives seem to be a common plant used for green roofs. The Philadelphia Fencing Acadamy has a lovely green roof. Hens and Chicks (Sepervivum) seem also to be a good choice. I want to use a few of the sedums that trail so they will look as if they are dripping off of the roof.

    April, I had already seen that website...there is a LOT there and it's a bit overwhelming, but I was able to extract some useful tidbts. If anyone knows a source for inexpensive Hens and Chicks (Sempervivum)...please let me know. It matters not if they are named.

    Thanks,

    John

  6. #6
    Let's positive thinking! seedjar's Avatar
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    Maybe String of Pearls? I don't know what the latin name is, but it's a pretty drought tolerant trailing vine with little succulent leaves that are spherical or oblong in shape.
    ~Joe
    o//~ Livin' like a bug ain't easy / My old clothes don't seem to fit me /
    I got little tiny bug feet / I don't really know what bugs eat /
    Don't want no one steppin' on me / Now I'm sympathizin' with fleas /
    Livin' like a bug ain't easy / Livin' like a bug ain't easy... o//~

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