I have two brugmansia which I grew from seed. One is heavily scented, a
butter-yellow variety of one which is, I think, normally white, and has
flowered happily for the last four years.

The other is a different species, about 3 years old and 5 ft high, and
has never flowered. I feed it regularly with tomato fertiliser. I had a
feeling that maybe it needed a certain amount of heat to persuade it to
flower, so this year I've left it in the greenhouse, but still nothing
(the other has been flowering since June on a S facing terrace).

So - any ideas to encourage flowers?
--
Kay