I has tiny white blooms that are very fragrant in the evening.

You do have to collect the seed pods before they burst though, as they reseed vigorously.
They are extremely easy to pull out where not wanted though....no way for them to become invasive unless you are an extremely lazy gardener...lol

I have a pic of my arbour where I grow them on the following link.

I have some seeds if you would like to send a SASE.

Let me know.......

Here is what mine looked like a few weeks ago. Next year, I am going to plant vines on both side of the arbour. I love that it reseeds itself and it is true that it is really easy to pull out the ones that you don't want as the baby plants are quite large.

Danni

brenda