Oh..I can understand your apprehension Donald..my schefflera container got tossed out by some strong gusts last year in late October.
Like you, I cannot bury my containers too, so I plan to put some hollow blocks later around the base, just to add some resistance. Hoping it will work. I also plan to move closer one of my heavy containers beside it for added balance hopefully.
My heavy Schefflera container, when it got tossed out, such strong winds..luckily it did not uproot the plant. My container is tapered at the base, so it was quite easy to lose its balance once the top heavy plant got blown.
So I plan to add some hollow blocks at the base and move this other heavy blue container beside it later, for more balance, at least this blue container is more even at the base. Thanks for your thread, I think I have to do some trimming now as well.
