leave wet soil .... if left inside ...do not water again for 30 days ....place at a south facing window or under a grow light
think of 50° as a "heads up"....your adenium can handle 50°, down to lower 40's with no problems ...last night, my plants were subjected to 45° and they were rained on yesterday ...nothing concerning
tonight lows are expected in the low 50 's ...Monday night predicted to be 48°
when I start seeing night temperatures lower than 40°.... will take action and move plants inside for the winter
