Climate matters. This page is a practical baseline. Confirm cultivar, local frost/heat conditions, mature size and regional restrictions before planting.
Ranunculus — Growing reference
| Scientific name | Ranunculus asiaticus |
|---|---|
| First harvest or flowering (days) | 90–120 |
| Measured from | Transplant |
| Plant spacing (cm) | 15.2–22.9 |
| Mature height (cm) | 30.5–61 |
| Mature spread (cm) | 15.2–22.9 |
| USDA hardiness zones | 8–11 |
| Light | Full sun |
| Water | Moderate |
| Sowing method | Bulb |
Growing directions
Soak corms in cool water for 4 hours before planting, then set them claw-side down about 2 in deep in well-drained, fertile soil. Ranunculus thrives in cool temperatures (45–65°F) and will decline when heat arrives, so timing is critical. In zones 9–10 plant October through January for blooms from February through May; provide afternoon shade in the warmest areas. After foliage yellows, allow corms to dry in situ or lift, cure, and store in a cool dry location for replanting.
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