I was successful once from cutting.

Hello, I have been successful rooting bougainvillea by this method. Take a cutting from new growth, take off all but the top three or four leaves, dip the end in rooting powder insert the cutting in a soil less mix, cover with a glass container, I use mason jars. Keep them out of the sun, but in bright light. Keep the cutting moist and it roots in about a month. Not all cuttings will make it, but I have about a 50% success rate using this method. Hope this helps, Rich.

When I lived in 9a Florida it was recommended to take bougie cuttings in January. I was also told to make them 12 inches long.

HI, I suppose in Florida that would work. However I ,live in Michigan and I have taken cuttings in spring and summer and have decent success with them. Also my cuttings are usually 6 to eight inches long. They usually root for me in about a month.