Q.My blue potato plant shrub has no leaves or buds as of March 29 in San Jose, CA.
Other plants are budding and flowering. Should I be concerned or is it just late to start. Weather here is in the 60s to 70 currently. I did break a twig and it looked green.

Certified GKH Gardening Expert
Well, it isn't quite hardy in your area. It may be too injured to recover, but it never hurts to give it a chance.
You will have to grow these as a potted plant in your area, and bring it indoors during winter. This article will give you more information: https://www.gardeningknowhow.com/ornamental/shrubs/potato-bush/potato-bush-information.htm