Climate matters. This page is a practical baseline. Confirm cultivar, local frost/heat conditions, mature size and regional restrictions before planting.
Moonflower — Growing reference
| Scientific name | Ipomoea alba |
|---|---|
| Seed germination (days) | 5–14 |
| Soil temperature for germination (°C) | 18.3–26.7 |
| First harvest or flowering (days) | 70–100 |
| Measured from | Seed |
| Plant spacing (cm) | 30.5–45.7 |
| Mature height (cm) | 182.9–457.2 |
| Mature spread (cm) | 30.5–61 |
| USDA hardiness zones | 3–11 |
| Light | Full sun |
| Water | Moderate |
| Sowing method | indoor-start |
Growing directions
Nick or soak seeds in warm water for 12 hours before sowing 1/2 in deep. Moonflower is a vigorous, fast-growing vine that needs a strong trellis or fence. Unlike morning glories, its large, fragrant white blossoms open in the evening and remain open through the night and into the following morning. Avoid high-nitrogen fertilizers to encourage blooming.
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