Answer: When the flowers have faded, cut the stem down to soil level, but allow the leaves to dry up naturally. The leaves help the bulb store energy for next year's flower. After the leaves have dried up, carefully remove by pulling them away from the bulb,or cutting them off at soil level. All of the bulbs you mention will be perfectly fine if left in the pot outdoors over the winter. Just ignore them and next spring they'll delight you with brand new blossoms.
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