Answer: Ornamental alliums can be planted in the fall. In your area, it's not too late to plant them. After being established for a few years they become crowded and need to be divided. Fall is the best time to do this. The bulbs do not need to be soaked overnight, but be sure to water the garden well after you plant them.<br><br>Your giant allium should bloom in July. Look for spectacular clusters of bright lilac colors on a tall stems.
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