Sow
Sow chillies and peppers indoors with warmth if you can provide a bright growing-on space. Hardy lettuce can start in modules under protection.
Grow
Prick out early seedlings before they crowd each other. Keep tender plants in their warm growing space, not an unheated greenhouse overnight.
Harvest
Harvest overwintered leaves sparingly and remove damaged foliage. Clear any exhausted pots for spring.
Jobs this month
Check your propagator with a thermometer. Open vents briefly on mild bright days and close them before temperatures fall.
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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