I have three large containers, 90 inches around, that have either a Ficus and China doll planted in them. Strong gusts of wind keep blowing them over and damaging the pots. Two pots weigh 100 lbs. without soil. The one with the Ficus is a resin pot. All are traditionally shaped. Do you have an idea as to what or how to brace the pots from blowing over?
Stopping Containers From Being Blown Over
Those certainly are large pots to be blowing over! The only thing I can recommend is installing some tie downs on them. Perhaps take some thin but strong rope and dye it a color that will match the containers or blend with the area and tie the containers down to some screw in the ground anchors is an "X" pattern. You could decorate the tie down rope lines with little critter ornaments climbing on them or hanging from them. Another method might be to place the containers next to a 4x4 fence type post, well set into the ground. This would help lend some taller support to the containers and what I suspect are a bit top heavy plantings in them.
Hope this helps!
Stan the Roseman :o)