Astonishingly resistant to PROLONGED cool weather and even to prolonged light frost. Not even a burn mark on the leaves. Mine survived even the 2004 cold spell (two consecutive days with snow storm max temp barely above zero and min temp btween -2 and -3 C, so it is sure that during night snow transformed to ice - I lost among other palms three Arecastrum) when it was still a seedling with undivided leaves.