I can't see the pics either but it sounds like it might be a Chinese Tallow especially since you're in Texas. I went on a two week vacation once and when I came home there was a 4 foot tree in my backyard that wasn't there when I left. While it has some ornamental use it's a very invasive, fast-growing plant and the toxic sap is harmful to livestock and even other plants.
Chinese tallow - Wikipedia, the free encyclopedia
With a last name like Pflughaupt I would expect you to have exceptional horticultural skills! My last name is Pflug so I should know.