Re: Getting zebrina to flower?
I bought mine last spring in something like March-April as a 10-12" 1 gallon pot at Lowes and it has grown to about 6' in the ground has 4 pups and it flowered last week. I don't think it's a matter of time it's water, light and nutrients.
My soil is sandy loamy and I fertilize every few months, watered to acclimate after planting and gave it no water all summer as we had a very wet summer. It gets full sun from 12 noon to about 5 as it's shaded in the am by a mango and afternoon by a house next door.
I have another in a large clay pot that I bought a few weeks after the first, it was larger than the first by double and it has grown less and has not flowered. It gets a bit more light and care has been the same as the first one.