We have taken cuttings of it, and given them away. I have used rooted cuttings as an annual in the flower bed on the north-west side of my house here in the Atlanta area. I have some cuttings as an office plant.

However...In the 26 years this plant and its descendants have been in the family, and the varying growing conditions,...it has not bloomed once.

From what I have read here and elsewhere on the web, Sophie Cecile is a reluctant bloomer.

So my question is....what specific things can I try to induce it to finally bloom? I have about 6-8 plants I can experiment with.

I agree Sophie Cecile is beautiful without blooms.

My curiosity was aroused because the flowers are supposed to be fragrant as well.
I can try different light levels, although, when I treated some cuttings (about 20) as an annual in my flowerbed 3 years ago, they were exposed to direct sun for the entire afternoon in summer, and never bloomed - I lost some leaves to scorch when I first put them out. They recovered beautifully - however nothing bloomed. They had grown about 2' tall by first frost which killed them (I didn't have room to dig them all and overwinter them).

Maybe the Tomato fertilizer will do it.

So, our experiment is at 4 plants - (1) current light (indoors South and East light) (2) higher light (3) current light and tomato fertilizer (4) higher light and tomato fertilizer.