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Thread: bog garden liner questions

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    back2eight's Avatar
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    bog garden liner questions

    Okay, so I'm thinking about building a bog garden for looks. I have hundreds of sars in pots and I want to do something a little different, so I'm looking into a bog garden.

    Does the liner have to be plastic? I'm thinking about just using a liner like people use in their flowerbeds to keep weeds down. It's sort of like that but a little stronger, we use it with our nursery plants, the bigger pots of trees and azaleas and shrubs, etc. We put this stuff down first and then sit the plants on it so it looks nicer and cleaner, and so the grass won't be growing up around the plants. It is made of a woven plastic. It is not water proof. The water goes right through it. I am not concerned about it holding water, I think as long as the soil is kept seperate from the regular dirt of the yard that I will be able to give them the right growing conditions.

    What do you think?

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    I would not recommend using the liner. Though it does allow for water to flow through it is also not permeable. These liners also eventually break down and you would have to recreate your garden every couple years or so. I would go with a pond liner, sturdy and non permeable. The problem with the permeability is that eventually you will get leaching from one soil to another. Even with water flushing out, nutrients will eventually leach into your peat moss. Also Sarr roots are very capable of penetrating deep into the ground, and your liner IMO would not stop the roots from breaking through.
    Just my 2 cents.

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    swords's Avatar
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    Home Depot has real pond liners. I got a 7 x 10 for $24.99 IIRC, I'm going to be lining my whiskey barrel with some of it and making a bog garden this year instead of just having the boring old Asiatic Lilies that I've had forever.

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    back2eight's Avatar
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    Okay, thanks both of you. My husband was trying to tell me that the pond liners were 10 dollars a square foot, which would make my idea outrageously expensive.

    So with a plastic liner, should I poke holes in it for drainage? I'm worried about it being TOO wet. We have some real frog stranglers here at times.

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    limeslide's Avatar
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    Sarracenia are adapted to some flooding.

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    I would line the bottom of the liner with something that allows some drainage away from the peat moss. The problem isnt the flooding of the Sarrs, it's the stagnant water. Stagnant water will cause rot and can wreck havock on a collection. If you can create a bottom layer that allows water to seep out of the peat moss when it's too wet and then allows it to seep back into the peat moss via evaporation when it's too hot/dry then this could work. It really depends on your climate though.
    If you receive too much rainfall though this method would be useless so I would try poking a few holes through the liner like you mentioned so that water slowly seeps out over time. The larger your bog the easier it will be to handle the watering. Since peat retains 10 times it's mass in water it will take a while to dry it out completely. There's a few growers that have in ground bogs I would ask around or search for picture threads.

    Liners are not very expensive, you can get a very large one at lowes for $50 that will fit plenty of Sarrs.

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    swords's Avatar
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    Just like anything else pond liners are cheaper in bulk, the bigger the area the less $ per sq. ft.

    For my bog barrel I'm going to stab a few holes about 1/2 way up the liner inside the barrel and line the bottom with large river stones separated from the bog soil with weed guard (kinda like a false bottom) this way when the barrel fills with rainwater it wont stay flooded but will always have plenty of "ground water" available.

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    Let's positive thinking! seedjar's Avatar
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    What I've read in pond design books is that you plot and level your pond, then take a few inches off a side that runs downhill for overflow. When it comes time to fill, use big rocks and coarse gravel on the overflow spot so that water can pass through but larger chunks of media don't escape. There's also Crissytal's reservoir box trick; bury a big plastic tote box with holes poked in the sides, and a snorkel leading above the media made from PVC pipe. The tote box holds more water than an equivalent volume of media and also allows you to use a sump/siphon pump to remove water from the bog when it gets too... boggy.
    ~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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