Growing in the crotch of a jacaranda tree at my mom's house in Mission Viejo, Orange County, California. She lives less than a mile inland from the Interstate 5 freeway. It has made one spike each year. This year it made two spikes for the first time.
It came from Andy's in December 2015. I tied it to the tree that spring. You can still see the string I used - I'll remove that next time I visit. My mom waters it with a heavy-duty squirt gun. Here is a cropped section of the photo, showing old spikes:
We moved into that new house in 1972 when I was in high school. I planted that tree in the next year or two. It was in a 5 gallon / 19 liter nursery container.