Haven't seen a thread on this yet, but its a nice method to increase yields by stressing the plant. Basically you gently twist a branch off the main stem in opposite direction until you hear a pop. The location of the break will cause the plant to produce more branches creating more leaves and flowers. I didn't want to post any links to the method because it is usually a canna subject, but you can do a search for super cropping twist and snap. Hope you find it interesting. Cheers!