Climate matters. This page is a practical baseline. Confirm cultivar, local frost/heat conditions, mature size and regional restrictions before planting.
Celosia — Growing reference
| Scientific name | Celosia argentea |
|---|---|
| Seed germination (days) | 6–14 |
| Soil temperature for germination (°C) | 21.1–26.7 |
| First harvest or flowering (days) | 60–90 |
| Measured from | Transplant |
| Plant spacing (cm) | 15.2–30.5 |
| Mature height (cm) | 15.2–91.4 |
| Mature spread (cm) | 15.2–30.5 |
| USDA hardiness zones | 3–11 |
| Light | Full sun |
| Water | Moderate |
| Sowing method | indoor-start |
Growing directions
Sow seed on the surface of moist starting mix and lightly press in — seed needs light and warmth to germinate. Do not rush transplanting into cold soil, as chilling causes plants to stall and go prematurely to seed. Deadhead spent plumes on crested and feathered types to extend the display. Celosia makes an excellent dried flower; harvest spikes just as they reach full color.
Source and local conditions
Typical planning ranges from OpenPlantDB (CC0). Cultivar, climate, season and growing method can change these values. Confirm the seed label and local guidance before planting.
Source & verification
OpenPlantDB · CC0