Sowing starts here.
Discover what you can sow and plant now. Or find a vegetable and see how to give it a good start.
What can you sow now?
Ideas for the rest of november still to sow or plant.
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Guide periods for the Netherlands and Flanders. Check the variety, sufficient light and measured soil and air temperatures.What would you like to grow?
Find a vegetable or browse the species. See when you can start and which approach suits your propagation space.
A good start: warmth and light
Warm sowing can be done indoors or in a heated greenhouse. After germination, every seedling needs enough light. A dark attic needs grow lights. An unheated greenhouse can become very cold at night: measure the temperature and check the advice for your crop.
1 of 108 species and crop groups
OnionStart under cover in a cool, bright positionFebruary–March for seed-grown onions
February–March for seed-grown onionsSow lightly in modules or a seed tray and grow on steadily.
- Germination and temperature
- Germinate under cover, then grow on in good light without excessive warmth.
- After emergence
- Give seedlings light immediately after emergence. A dark loft needs suitable grow lights; warmth alone is insufficient. Ventilate and keep the compost moist without saturating it.
- Pricking out and potting on
- Sow in modules or a seed tray. Move young plants with their root ball according to cultivar guidance; a small group of spring onions can stay together.
- Hardening off and planting out
- Gradually acclimatise indoor-raised plants to sun, wind and outdoor temperatures; shelter them again on cold nights. Plant out sturdy young onions at suitable final spacing. Seed-grown onions are plants raised from seed; onion sets are planted directly.
Onion sets and seed-grown onions are different starting routes. Bunching and spring onions are generally harvested young.
Sources and use
Royal Horticultural Society · RHS — ui kweken ↗Soort- of productgebonden bron; buitenlandse perioden zijn geen vaste Nederlandse zaaidatum.
University of Minnesota Extension · UMN Extension — ui in de moestuin ↗Soort- of productgebonden bron; buitenlandse perioden zijn geen vaste Nederlandse zaaidatum.
Guideline periods for the Netherlands and Flanders. Check the variety, available light, soil and measured temperatures. Greenhouse heating does not guarantee enough winter light.