So I've planted this Paulownia tree in my backyard in March and it's been having problems. I have it planted in full sun, and it came to me from Park Landscape as a bareroot tree. When it arrived, it was just a small trunk with no branches. After a few weeks, little leaves began to sprout from the trunk in pairs, about 4 of them. In the past month, all of these have turned brown and dropped off, starting at the top and the last ones at the bottom fell yesterday. The trunk has turned darker too, from the top and working its way to the bottom. I am starting to think perhaps I am treating it too well, having read that "It grows well in a wide variety of soil types, notably poor ones, but needs a lot of light and does not like a high water table." I have it planted where it is watered every day by the sprinklers that water our lawn. Perhaps I should move it to a location that does not get as much water, on a drip system that I can control the amount of water it receives. It was doing better before we had our sprinklers in... and sometimes I would forget to water it for a couple days. Any ideas?