I am zone 9b and right now my Angel's trumpet is on my front porch in my "winter" greenhouse, i.e. plastic panels on 3 sides, along with a heater! We had temps in the hi 20's this week, it was 40 most of the day - there is NO WAY I am leaving this plant outside in the weather.

What you are looking at is probably a Datura, often called Devils Trumpet because the flowers point up as opposed to Brugmansia, often called Angels Trumpet, because the flowers mostly point down. There are no purple brugs, only purple daturas. Either way, neither will survive the winter in your zone, tho the Datura will probably set seeds and re-seed itself and re-sprout from seeds the next spring, brugs won't
Dan

these are the white seeds i won.

{{gwi:2122730}}

these im intending to win......

{{gwi:2122731}}

Datura !!!!

Yes, they are definitely daturas. So, in your zone, they will self seed, by the 100s !! Each pod will be loaded with up 100 seeds or so, and when they get ripe and burst open, scattering the seeds, you will have more plants in the spring, unless you harvest the seedpods before they open on their own. In my opinion, don't waste time trying to mulch the mother plant, you will have more than enough seeds/plants come next spring.
Dan