I'm completely new to caring for plants. Having recently become "interested" in maples, but being the ruler of only a small, roof-less balcony, I am forced to stick to container gardening. That is why I'm wondering, whether I need to protect my potted trees from heavy rain in any particular way? Or can I just ignore these heavy summer showers, like we had yesterday? Should I be worried if before that, I just watered some of my maples? The limp pose of my hackonechloa grass shown below says it all. When planting the trees, I used pots with a watering hole at the bottom, coveredy by a shard, covered by clay pebbles, followed by a fleece, followed by the root ball.