"Jeff & Kathy Brown"
We have a huge Thalia and the wind keeps knocking it over.

Kathy,
For any top heavy plant, you can try getting a container 2 sizes
larger and filling the bottom 1/3 with rocks, then place your potted
plant into the center of this container and fill around it with either
stones and/or sand. This hopefully would add enough weight to keep it
upright. Good luck

Sue W