Hi! Wondering if anyone can advise me concerning growing a mandevilla vine in the n.c sandhills area. I know they grow well here in spring and summer; but am needing some advise about whether they should be wintered out of ground or in! It is a beautiful vine still in the pot and really do want to put it in the ground! Thanks for any advice. I have searched the net and have not really found much, even on garden web to answer my questions! Thanks in advance for any input! Tips on soil prep would be a plus too!