Brugmansia Zone 7. I brought them into the screened porch where the buds are growing and I have one flower almost 6 inches long. Remove spent flowers to keep the plant tidy.
In colder climates less than zone 7 they can be grown as a patio plant and moved inside to a sunny window for the winter. 08112019 Then place it near a south-facing window and keep it moist. Generally speaking zones 5-7 full sun is often preferred.
I live in Zone 7-8.
19092020 A Brugmansia Angle Trumpet Can Grow Up To 6 Ft Tall In A Season. Here in zones 7 they go dormant and winter over just fine. Remove and collect seeds. A self-watering pot will make a big difference.