Climate matters. This page is a practical baseline. Confirm cultivar, local frost/heat conditions, mature size and regional restrictions before planting.
Dusty Miller — Growing reference
| Scientific name | Senecio cineraria |
|---|---|
| Seed germination (days) | 10–14 |
| Soil temperature for germination (°C) | 18.3–23.9 |
| First harvest or flowering (days) | 60–80 |
| Measured from | Transplant |
| Plant spacing (cm) | 20.3–30.5 |
| Mature height (cm) | 20.3–45.7 |
| Mature spread (cm) | 25.4–35.6 |
| USDA hardiness zones | 2–11 |
| Light | Full sun |
| Water | Low |
| Sowing method | indoor-start |
Growing directions
Surface-sow tiny seeds on moist germination mix and provide light at 65–75°F; germination is slow and uneven over 10–14 days. Plant in full sun in well-drained soil; excellent salt and drought tolerance makes this ideal for coastal and hot dry sites. The silvery white, felted foliage is the ornamental feature — pinch off yellow flower buds when they appear to keep plants neat and maintain vigorous leaf growth. In zones 8–11 dusty miller overwinters as a short-lived perennial.
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