Quart plant Angel trumpet BRUGMANSIA Wretched Mess double white. This white Angel trumpet produces lots of these blossoms extending downward throughout the summer. No two blossoms are the same. Hardy to zone 7 and above, will die back to the ground with extended freezing temperatures but will grow right back in the spring. I have had good luck with both planting in the ground and in containers in my zone 8b area. All parts of this plant are poisonous if ingested.