Grape hyacinths produce several dense spikes of tiny, true blue flowers from each bulb. They are beautiful on their own, but their greatest value may be as companions to midseason tulips. That rich blue makes almost any tulip color pop.
|Botanical Name||Muscari armeniacum|
|Catalog Page (2020)||133|
|Sunlight||Full or Part|
|Good for Naturalizing||✓|
|Depth of Planting Hole||3 inches|
|Spacing||2 inches apart|
|Density||14-15 per sq. ft.|
To find the number of bulbs you need, determine the square footage of the planting area and enter it in the box.
Need help figuring square footage? See our Bed Area Calculator.
These bulbs thrive in full sun or partial shade and any well-drained soil. Muscari armeniacum bulbs planted in a prior year often produce tufts of grasslike foliage in fall, which has the benefit of reminding you where they are when you are planting additional bulbs. They will bloom on schedule the following spring.
Note: Do not be concerned if you see blue mold on your muscari bulbs. Go ahead and plant them. The mold will not affect their performance.
Spring-flowering bulbs must be planted in the fall. They need cool soil to make roots before the onset of winter. Cool fall weather arrives at different times from north to south and from high elevations to low.
Please note that the temperature of the soil lags behind the air temperature. You can generally plant later than the windows provided in this map. As long as the ground is not frozen, you can still plant.
|Southern Limit||8b *|
|Western Limit||10b *|
|* Prechill in Zones 7b and warmer in the South, Southwest and California|
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