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In article , Paul Giverin
writes Anyway I digress. The greenhouse is erected on a concrete plinth that was previously used for an aviary. I felt (rightly or wrongly) that I needed to do something to insulate the concrete because I though it would be quite cold. I used two or three bags of cheapo compost and spread it on the floor. Now I'm wondering if there was a better alternative or whether I need to use anything at all. I intend to use the greenhouse to over winter a load of our plants which are in terracotta pots and prone to cracking with the frost. I've got some bubble wrap and will shortly begin to lining the greenhouse with it. I've also invested in an electric heater to keep it frost free but also to help get a head start with next years seeds. Mine is concrete - easy to sweep clean. I usually raise plants of the floor in winter by standing them on something (1) balanced on bricks. The logic of this is that hot air rises so one might expect a layer of cold air along the floor (2) - in which case, covering the floor with compost would merely raise the level of the floor and I'd still want to raise my plants above it. But there's no guarantee my logic is sound. (1) old pieces of staging, plastic trays, old polystyrene boxes - anything that comes to hand (2) and you can sweep under them -- Kay "Do not insult the crocodile until you have crossed the river" |
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