Help! I have 2 potted plumerias that are about 30years old. I live in New York so they are outside in the summer and I bring them inside in the winter. They have bloomed and therefore branched out many times making them tall with a wide canopy. Because they are in pots they are top heavy and blow over in the wind. So I weigh them down with bricks when outside. Over the years, I have repotted them to accommodate their growth and I now need to find a pot that is sturdy enough to hold them without being too heavy to carry it outside when filled with soil and the tree. Does any one have any suggestions.