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Thread: Cover for a hot bed

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    rary's Avatar
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    Default Cover for a hot bed

    I am putting a hot bed into my greenhouse for sowing seeds, I have the choice of three different covers for it, which are clear polythene, fleece or enviromesh
    Could anyone tell me what would be the best cover to use
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    Aberdeenplotter is offline Gardening Guru
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    I'm trying to envisage the finished article. You digging out a hole to fill with horsemuck or similar and then covering with soil at ground level?
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    I think polythene would give you a condensation problem. I'd go fleece as should be warmer than enviromesh depending on the quality while still allowing the plants to breathe.
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    I use polythene, but my hotbeds are outside. It does produce condensation, which is an issue in any enclosed environment at this time of year. You can always open it up on warmer days for a change of air.

    Bearing in mind the low light levels at this time of year I would be inclined to prefer mesh to fleece, but I'd be using the white kind, not coloured. The greenhouse will help to keep some of the cold out anyway.
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    Fleece or enviromesh will not retain heat the same as polythene or glass but the latter will give condensation problems.

    I would think that whichever method you chose, the whole greenhouse would be dripping wet all the time.
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    Derbydal is offline Sprouter
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    would the cheap black weed surpressant stuff do the the job ? and it may wick the water back down into the hoss muck, also it may absorb heat from whatever day light you get in the greenhouse ! atb Dal.
    Last edited by Derbydal; 08-01-2019 at 09:17 AM.
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    rary's Avatar
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    Quote Originally Posted by Aberdeenplotter View Post
    I'm trying to envisage the finished article. You digging out a hole to fill with horsemuck or similar and then covering with soil at ground level?
    I have possibly named it wrong, I will be filling a box with a sand compost mix and burying an electric heating cable in it, it will be large enough for seed propagation and also to grow on some plants
    it may be a struggle to reach the top, but once your over the hill your problems start.

    Member of the Nutters Club but I think I am just there to make up the numbers

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    I've seen a few posts with a box frame 1.2m x 1.2m (4' x 4') back filled with muck and topped off with compost and sand to give a hot bed. When these are in Polytunnels, they finish off the top with a frame and hoops to form a mini polytunnel.

    i.e. you end up with a hot bed between 600 and 900mm high, with 2 hoops over the top smaller frame 1.2 x 1.2. You just list this one off to gain access. Same basic idea as the blue pipe question posted yesterday.

    edit.
    You could use same basic concept for you soil warming cable. I was thinking of this, but didn't think temperature in greenhouse would be high enough to keep air temperature in the warm bed high enough over night.
    Last edited by 4Shoes; 08-01-2019 at 04:35 PM.
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