I discovered in June, on a trip down to our cabin property an hour away, that I have passion flower vine growing wild all over the back yard fence! I was doing some shrub and tree watering in our oppressive heat, in hopes of not losing everything I'd recently planted (we've only just owned this 42 acre place 2 years), and saw a huge bulb-like bloom. When I walked around to the other side of that fence, I saw this bloom on a vine with 3-lobed leaves (later became 5-lobed leaves) :
Then I counted 6 more just waiting to open up! Our next trip down, they had opened and died off. Only one bloom left last Wednesday. They are so exotic looking I'm delighted to find this wildflower abounds there. Seedlings or suckers are coming up in the grass some distance from the fence and that tree, too. I may dig some of those seedlings in the grass up, pot them and bring back to our city home.
Funny story: The 1st year we owned this place, I thought this vine was a weed or maybe even worse, possibly poison ivy? Three leaves, right? The day I found it, it wasn't blooming, so I walked back to put on my garden gloves and pulled it all up, roots and all, as I was clearing the chain-link fence of all weeds. No rash appeared for 24 hours, and I knew I had brushed it on my forearm accidentally, so it wasn't poison ivy at least, phew! Well it must be hardy and must like its semi shady spot, as a number of them grew back in the same spot and there are other bits of it growing up around a nearby oak tree trunk, too!
We all have to learn about garden plants over time. LOL I've since read they really do grow wild in Texas. Here I thought they were expensive, exotic flowers.