There are many invasive vines like Honeysuckle and Oriental Bittersweet that strangle trees. I used a pruner to cut many of the vines and unwrap them from around the tree trunk. Unfortunately, some of the vines are as big as tree trunks and the pruner just won't cut those. Even if I can't get them all, slowing down their growth still helps.

In addition to shorter showers, you can also reduce the intensity of the water flow to save water. Lather up with lower flow water and then turn up to rinse off.