I think the two of mine were that tall when I finally cut them off. I didn't want foliage, I wanted fruit!
As someone who doesn't know what they're doing, I claim ignorance! As they are still producing, I obviously didn't hurt them any. It very well could've been beginners luck though.
“In walking, just walk. In sitting, just sit. Above all, don’t wobble.”
– Zen saying
It very well could've been beginners luck though. 
