Answer: My research indicates that the main stem of your brugmansia must form a "Y" before it can flower. It's not the same as branching out, but is a distinctive "Y". You will see unequal leaf bases where a plant has formed a "Y". I have some plants that reach 6+ feet before they will form a "Y" and others that will bloom while still very small. I had the experience with a 3 yr. old brugmansia that was 5 ft. tall and even though I gave it all the care it should receive, it refused to make a Y. At the end of the growing season, before I took it indoors, I got mad and cut the top off so the plant was only 8 inches tall. I told it to make a "Y" or it was going into the compost bin. In a few weeks it made a "Y" so I expect it will bloom right on schedule. You might do the same with yours. Hope this helps!
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