Rita, I wonder if you could have pruned that new growth and kept them fruiting at that advertised size...
I've found that if I sink a container even a few inches, it'll be as moist as the surrounding garden area, so it'll need less supplemental watering than if I'd just put the container on top of the ground.
Dave, thanks!
I looked up dimensions, because I tend to underestimate the volume of large containers -- a 5 gallon round nursery pot is only about 11 inches tall and wide.