This story is part of “The Stakes,” a UC Berkeley Journalism project on executive orders and actions affecting Californians and their communities. Elizabeth Wardman has owned a Rockridge flower shop for 10 years and has seen product prices fluctuate during that time.  But she’s worried about the impact new tariffs on imports could have on her business.  In the summer, Wardman gets 75% of the flowers for her shop, Wisteria Rockridge, from local farmers and the rest are imported from Columbia and…