Autumn is the best time to undertake a major clean of the interior of the greenhouse, as the weather is still mild enough to allow tender plants to be left outside whilst the work is being carried out. Scrub down surfaces well, and fumigate with insecticidal or fungicidal smoke if required. Remove shading when the sun has become less intense.

Bring in tender plants or winter-flowering plants from outside and repot or top-dress; make sure containers are clean before bringing them inside. Reduce the amount of watering and feeding of other plants as their growth slows.

Avoid cold drafts through the greenhouse, insulate where necessary.