Mandevilla - Alice du Pont: Overwintering problem
I have kept my Mandevilla going OK all winter, along with some New Guinea impatiens.
I am about to put this plant outside again: I have noticed on some of the junctions - where branches occur - there is white fluffy sticky stuff. Doesnt look good. What might it be and whats the treatment?
Also if this thing survives the above, would this plant be better in full sun or part shade? I have seen some growing well in very sunny spots.