When trunk is 11-12' tall, would be a good guess. If you are close, it might be soon, otherwise it might wait till spring, depending on how close it is, and how cool winter is. My gut feel would be next spring.

Mine just started flowering. The first indication we noted was the last leaf it produced. It was very small and purplish on the end. Within a few days the flower pod emerged. Ironically I took some pups off of it a few weeks ago also...not certain if this made a difference.

I planted out 2 tissue cultire pups in the Spring of 2004, at about 4 INCHES total height. They made it through our rough winter ( they both saw 24 degrees, and several nights of 26-29 degree weather). The first one bloomed in June of this year and the second one bloomed in August, both at about 9 feet of trunk height. The pups from these 2 plants, are now both bigger than the "mamas", with about 11 feet of trunk.

Houston, we have flower! I saw the sucker this morning. I am very pleased. Thanks for the good thoughts. Now, when will my wife win the lottery?

You have good news. It is exciting to see the small paddle leaf and then the inflorescence pushing up like a giant ear of corn. The tiny bananas inside are waiting the for bracts to open so they can see the sunshine.