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This topic always seems to come up in the middle of winter. Am I the only one whose greenhouse is absolutely packed with half-hardy plants? I can hardly get in, never mind clean anything. By late May there will be nothing waiting to go out and I will be able to give it a proper spring clean.

Posy, the weather is still mild. I'd take all the plants out for a day with no frost overnight and clean it. Put them all back in next day or later in the day.

24 hrs outside won't do them any harm and not cleaning the GH may cost you dearly later in the year.

The reason now is the time is that any bugs left after cleaning have less chance of multiplying in the colder weather.


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