Kin, Pinch from the top, to encourage side shoots to form (yielding a bushier plant). So you’d be pinching out the growing tips at the very top of each stem, back to just above a pair of leaves. You can probably observe on the plant how new growth is coming from some of the spots where leaves meet stem, and that’s what you want to make more of for a more sturdy plant. Limiting topgrowth should push the energy sideways, so to speak. Now that I know more about how these have been growing (indoors, etc.) I am not surprised that they are a little rangy. Plants stretch and get floppy when they don’t have enough light (which is often the case in winter). I will be interested to see what happens with your "cut flowers" turned pot plant, and all your other upcoming adventures on your terrace. M.