Hi, Carol. That looks like an empress tree (Paulownia tomentosa) to me. Not officially considered invasive, but will certainly turn into a 60' tree. I see it popping up more and more around town, so, I wouldn't wait around for it to become a problem. It should be fairly easy to pull up once we get some rain.

Let me know if you have other questions (mitch.bixby@portlandoregon.gov).

-Mitch

Mitch Bixby
Sept. 12, 2017, 6:39 a.m.