Climate matters. This page is a practical baseline. Confirm cultivar, local frost/heat conditions, mature size and regional restrictions before planting.
Grape Hyacinth — Growing reference
| Scientific name | Muscari armeniacum |
|---|---|
| First harvest or flowering (days) | 150–180 |
| Measured from | Transplant |
| Plant spacing (cm) | 5.1–7.6 |
| Mature height (cm) | 15.2–22.9 |
| Mature spread (cm) | 5.1–7.6 |
| USDA hardiness zones | 3–9 |
| Light | Full sun |
| Water | Low |
| Sowing method | Bulb |
Growing directions
Plant small bulbs 3–4 in deep in any well-drained soil; foliage emerges in fall and overwinters as a low ground cover, with tight clusters of cobalt-blue, urn-shaped flowers appearing in early to mid-spring. Muscari naturalizes aggressively by offsets and self-seeding and can spread widely — site where this is desirable or divide clumps every few years in fall to control spread. Excellent planted beneath tulips and daffodils to create complementary color combinations. Deer and rodents generally leave them alone.
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