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Siting the greenhouse

Greenhouses are usually supplied with a plinth of the same material they are constructed with and this can be placed straight on to the earth or concrete where the house is to be erected, or, preferably, put on to a foundation and dwarf wall of bricks or concrete.

It is really a matter of personal preference whether you decide to concrete or pave the whole floor or leave borders down one or either side. The soil in borders can eventually become disease ridden and will require sterilizing, or preferably changing if you are growing the same crops year after year, but if you are growing conservatory-type permanent ornamental plants, these can be planted safely into the border soil. The alternative is to use pots or growing bags, replacing the compost annually.

It is often recommended that the best position for siting a greenhouse is running east—west, which admits most light and provides both a sunny and a shady side, but in many gardens the ideal aspect is not possible, so aim for an open, sheltered, level position away from objects which cast a heavy shade, and especially not under trees. Having said this, even a north-facing lean-to can be put to good use if no other aspect is available, though the choice of plants is more limited. If possible, the greenhouse should be accessible to the nearest water supply and preferably the electricity mains as well

If you are erecting your own greenhouse, do take notice of the instructions supplied with it and follow the manufacturer’s recommendations and the sequence of construction — this is usually done for a reason; not only does it make the assembly easier, but if you try to short-cut or use your own methods you can often end up with a bent frame and a pile of broken glass.


  1. February 11, 2015  4:59 pm by Margaret colville Reply

    Hello I would like some idea off what to plant prefer maintenance free I have just removed plants 8 in number which has left a very very large space in my garden any ideas . Margaret

    • February 12, 2015  10:16 am by David Reply

      Hi Margaret

      When you say that you removed 8 plants what were they - small plants or shrubs, also what is the area size?

  2. March 10, 2015  11:05 pm by Margaret colville Reply

    Hello David
    They were miniature trees being in over 20 years one was I would say 10 ft high and the stumps off the tree was about 2/3 inches thick my hubby is going to pull these out with my tractor. Would you advise me to try and cut the roots to same. They were over growing other shrubs which have been there all over 20 years the house was built 25 years ago approx. I was going to try and put some other type off evergreen in. At the back off the bed there was planted a very large leyland hedge which was also overgrown we have got it cut back but one would think there were 2 seperately hedges. My garden is by no ways large I am not good at measurements . Will get it measured and let you know margaret colville

    • March 16, 2015  8:49 am by David Reply

      Hi Margaret

      Gareth suggests removing the stumps - try digging under them with a spade then a trowel to get the soil out of the roots. Then chop through the roots with a pruning saw or loppers and you should be able to get the stumps out. These might help!

      And in regard to replacement plants, mahonias are pretty and very low maintenance

      Good Luck!

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