USDA Zones 10 - 11. Norfolk Island pine is very tender and will begin to sustain damage at temperatures below 40ºF (4.4ºC) beginning with discoloration of foliage. the Norfolk Island pine is grown in warmer and protected micro-climates throughout Zone 9 - especially near the water. If the tree is killed by frost new stems will be produced from the roots. Baton Rouge is in zone 9 so it is on the northern edge of the zone that Norfolk can survive. The cold in the winter will be it downfall. In Zone 9 it will survive most winters, but if you get a bad one, say mid 20s it will be gone.
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