Answer: Spring flowering bulbs are quite tolerant of cold weather so they should be left outdoors. Some bulbs begin growing too early in the season after a few days of warm weather but they will stop growing when the weather turns cold again. If they are turning yellow, they may be sitting in soggy soil. Make sure the pots have adequate drainage holes in the bottom so excess water can easily drain. Natural rainfall should be all the water they need.
Best wishes with your bulbs.
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