Q.I need to know the best way to cut my Angel Trumpet
I live in Indiana (zone 4-5) and started an Angel Trumpet from seed. It grew well last summer and I put it in the basement over the winter – with occasional watering. It got rather “leggy” – one tall stem. Now what do I do to take it outside again this spring/summer? How far should I cut it back? It’s about 30 inches tall with no leaves except at the very top.
Here's an article that will tell you the basics of brugmansia pruning. https://www.gardeningknowhow.com/ornamental/trees/brugmansia/prune-brugmansia-trees.htm
Since you have only one stem, you're not ready for all this yet, but good to have the info. You need to envision what your plant will look like as it gets older. The point at which you cut it is where it will start to branch. I would think you might want to cut it about 2' from the soil, but it's your choice.