Brugmansia, Angel's Trumpet, Salmon Angel Trumpet 'Double White'

I am in zone 7b and have kept a beautiful brug for 10years. it s variegated leaves with peach flowers. It is in the size pot I'm happy wi...Read Moreth. I need to trim back .Only one branch has a Y on it. can I cut the other branches off? Only the Y branch bloomed this year.

I absolutely love angel trumpet. I ordered 3 from a catalog about ten months ago. They are in 3 planters in full sun. I am in central Flo...Read Morerida so plants require almost daily watering unless it rains about an inch. I can't decide whether to plant in ground or cut back for the winter. It does freeze here and I know they will need to be brought in or covered well. They grew from about 2 inches ...now all 3 are about 5 feet high.

Have grown these lovely plants for many years ,always as pot grown and take them through winter,now at the age of 76 i find the pots hard...Read More to transport , and for the last 2 years have left them outside in a raised 3 metre octagonal bed they have survived i let the frost cut them down a bit, then cut them down to about a foot and mulch very well,then cover the entire bed with a few layers of fleece,at the moment ( October 14th ) they are 6-7 foot tall with dozens and dozens of white pink and yellow blooms all mixed , just waiting for the first frost to spoil the show ,before i put them to bed for the winter , and this is in Kent England about 15 miles outside London,
Keeping my fingers crossed for a not too bad a winter .

Just to let you know that this plant (Brugmansia) - we call it the Moon Flower, grows well here in Zimbabwe, I have a few in my own garde...Read Moren - white, cream and a lovely coral/pink. I have spotted a yellow one not too far away in our neighbourhood too......
I have grown all of mine from cuttings, all successfully.
Would like to try a bonsai one day......
I was always warned as a child to keep away from them.....although I have never heard of anyone being poisoned. Are they not linked to hallucinogens in the old days? As in witch's brews etc.?