I was forced to go through with this myself alittle while back. My house was up for sale, so an inspector had to come by.
I used boxes to put the plants in, and another box on top to form just one large box. I needed 2 of these for my girls. taped them up, wrote fragile(sp?) ect. In fact I even remember writting " Disney displ." on one of the boxes.
Leave it up to the viewer's mind of what it could be, all the while stacked up with other open boxes of clothing, silverware, DVD's, ect.
Their was a slight bit of oder, but nothing a candle or 2 placed in the right spot with some fresh cool air can't handle.
Everything worked out just as planned