Hi! I have a south-facing garden backing onto a small woodland. In recent years I've noticed more and more bracken popping up in the borders. As fast as I pull it up, more appears. I have no idea how to get rid of it without digging up the whole garden - which I cannot do. Any ideas how to control or weaken it without compromising my other shrubs and plants? And yes, it's an acid soil - we have rhododendrons and azaleas growing.