The world’s largest flower show opens for previews tomorrow (and then to the public on Saturday). While workers finished displays last night for “Brilliant,” members of the press strolled around snapping photos and taking notes. The theme this year is Britain–and indeed there’s hardly an Anglophile theme left out (yellow submarines included). This year marks the first for the widespread use of the Horticultural Society’s new moniker, the simplified PHS, and for its new Hamilton Horticourt, funded by longtime Flower Show benefactor Dodo Hamilton. PHS president Drew Becher has made a priority of returning the organization and the show to its roots in commercial horticulture. Can Philadelphia reassert its role as a horticulture industry innovator? Becher thinks so; one step in that direction is the “New Plant Showcase” at this year’s show.