|I live in Zone 5 and saw a
|Answer from NGA
September 1, 2005
|You are right to wonder, Bougainvillea is essentially a tropical plant. It loves the summer sun and heat and does best where summers are long. It can be grown as a houseplant in winter but it would never survive the cold outside -- if you want to keep it as a houseplant it should be brought inside before temperatures drop below about 55 degrees. If you purchase it, do not plant it in the ground. Keep it as a container plant to make moving it in and out easier. I hope this helps.
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