Celosia: Sowing, planting and harvest calendar
When and how do you sow celosias indoors?
Sow celosias in spring, around six to eight weeks before outdoor planting is likely to be possible, according to selection and climate. The protected space needs light and warmth; a cold greenhouse does not replace germination heat. Aim for around 21 to 27 °C in the growing medium, following the packet. Do not automatically plan outdoor planting for mid-May if nights remain cold.
Use clean pots or a module tray with drainage holes and fine, free-draining seed compost. Moisten it before scattering a small amount of seed. Press gently onto the surface and add only a very thin covering if the packet instructions call for it: light must reach the seeds. Thick burial hinders emergence. Mist or water from below to avoid displacing the tiny seeds. Label the group or variety and date.
Maintain steady moisture without standing water and watch germination, often within one to two weeks under suitable conditions. After emergence, provide plenty of light and ventilation. Growing temperatures around 17 to 20 °C may suit the seedlings. Once large enough to handle, separate them if needed while protecting roots. Harden plants off before planting; height alone does not indicate readiness for outdoor cold.
When and how do you plant young celosias?
When do celosias flower and how do you care for their blooms?
