Answer: Only time will tell! It may be that the underground parts of the plants are still alive, and with good growing conditions could spout new shoots. Next winter, when you expect a cold wave, cover the plants with fabric or piled leaves or evergreen boughs until the danger has passed.
Bird of paradise needs bright, indirect sunlight and well-drained soil. Water thoroughly and let soil dry between waterings. It's native to the humid tropics, so if you live in an arid region, increase humidity in the area with a fine mist sprinkler, water trough or bird bath near the plant. Hope this helps!
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