I have a prickly pear that is about 15 years old. In all the time I have had it, it has only bloomed once. It was covered with hundreds of yellow flowers. What am I doing wrong? I have taken a piece of it and started a new one a few years ago. I keep that outside year round, I live in Zone 6. The original I bring in every fall along with my night blooming cactus.
Please help and thank you