11-22-2011, 01:27 PM
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Senior Member
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Join Date: Jul 2006
Zone: 5b
Location: Michigan
Posts: 3,077
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Typically they only grow for 2 or three months (some species only about 1 month) before they die back and go dormant for the season. Not unlike tulips. If yours is not hardy in your zone, then it is time to dig it up, clean off the bulb, and keep it some place dark and dry until spring. If yours is a winter hardy species, then you have nothing you need to do but ignore it and look forward to its reappearance next year. 
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