Hydrangeas: pruning small hydrangea plants, 1 by Pashta

Pashta wrote:
I had ordered some small annabelle hydrangeas, not expecting them to be as small as they ended up being. They have about doubled in size from when I bought them, which isnt saying much, since they were small to begin with and are still small now. I have one in a self watering pot, which it seems to love (I grow everything in those because they work really well for anything I think) and the other is potted almost completely in peat moss, which it also seems to love. They get bright ambient light in the window, but I am wondering if I need to pinch the tops down to encourage the stem of the plant to thicken, or do I just let it go? if I remove the small stick I have as support, the whole thing flops over, so I am contemplating pruning the whole thing down a bit to try and even out the root -to-foliage growth ratio (so to speak). Any suggestions?? Thanks!!!