Spring or autumn, with a suitable cultivarSow directly into greenhouse soil or a container, provide light and ventilate.
- Germination and temperature
- Wait for workable, warmed soil; follow the cultivar’s minimum sowing temperature.
- After emergence
- Keep the seed row evenly moist during emergence and identifiable with a label.
- Pricking out and potting on
- Sow thinly and thin in the final position where needed. For cutting leaves, every seedling need not stand separately.
- Hardening off and planting out
- Stays where sown; hardening off and planting out are unnecessary for direct sowing.
A cool, even start helps. Heat, drought or an unsuitable cultivar window can make plants bolt quickly.
Sources and use
RHS · radijs ↗Britse teeltrichtlijn voor een gematigd klimaat; de genoemde perioden zijn richtlijnen voor Nederland en Vlaanderen.
De Bolster · Raapsteel Namenia ↗Nederlandse producent of teeltbron; de rasinstructie blijft leidend.
De Bolster · Raapsteel: gewas en teelt ↗Nederlandse producent of teeltbron; de rasinstructie blijft leidend.
Guideline periods for the Netherlands and Flanders. Check the variety, available light, soil and measured temperatures. Greenhouse heating does not guarantee enough winter light.