Answer: Bougainvillea is frost-tender, suffering damage at 28 degrees F. However, as long as it doesn't get too cold, for too long, they usually bounce back when temperatures warm. The plants will usually show you where to cut back to--wherever the new growth is. However, don't cut back too soon, as even though plants can look brown and crispy, you may inadvertently cut off living tissue. You can also scratch a limb with your fingernail. If the tissue is green beneath, it should come back. If it's black, or dry and will snap off, it's dead. Good luck with your bougainvillea.
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