When to Plant
Delivery & Planting Times
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.
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.
|Sunlight||Full or Part|
Bulb size is determined by the circumference around the largest part of the bulb. Colorblends only delivers top size bulbs. Large bulbs produce more or larger flowers than small bulbs.
Hardy in USDA zones 4a to 8b in the South or 10b on the West Coast. Prechill in zones 7b and warmer in the South, Southwest, and California.
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 late summer or early 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.
|Depth of Planting Hole||3 inches|
|Spacing||2 inches apart|