Sow
Plan autumn crops and start suitable leafy salads later in the month. Germinate in a cooler spot if greenhouse temperatures are too high.
Grow
Train climbing crops and maintain even moisture. Remove diseased leaves promptly without stripping healthy plants.
Harvest
Pick tomatoes, cucumbers, peppers and herbs as they become ready. Regular cucumber picking helps avoid oversized fruit.
Jobs this month
Open doors and vents safely, use appropriate shading and arrange daily holiday checks. Look for whitefly and red spider mite.
Make your own growing notes
Record what you sowed, your overnight minimum temperature and how the plants responded. Check the compost below the surface before watering: the same calendar date can bring very different conditions from one year to the next. Use the seed packet’s variety-specific guidance alongside this monthly plan.
For tender crops, distinguish the warmth needed for germination from the conditions needed after seedlings emerge. For winter leaves, choose varieties intended for the season and allow for slower growth as daylight falls.
Further reading: RHS greenhouse vegetable growing.
What’s happening in your greenhouse?
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