@gjones this one is about 7 years old? I have another that may be 8 or 9 years old and taller. They both have been cut twice each. When I cut the tops... I give them away. When my neighbor gave me her top it was about 6 inches.
This plant was about 6 inches when I got it. I’ve trimmed the top 3 times and it’s time again. It’s about 7 years old and this is the first time it flowered. The flower has a smell mainly at night. When you walk in the house... the whole downstairs smells like the flower.