Light show to wash Park Conservatory in psychedelia

On Wednesday night at 9:15 p.m., he will find out, along with an expected 10,000 spectators, when his installation “Photosynthesis” flashes to life as the pinnacle of the “Surrealistic Summer Solstice” free concert in Golden Gate Park and probably the peak moment in the citywide celebration surrounding the 50th anniversary of the Summer of Love. The show, which involves a series of psychedelic flowers and insect patterns projected onto the white glass exterior of the Conservatory, will run nightly from sundown until midnight through Oct. 21, funded privately through the San Francisco Parks Alliance. Anticipation is high for the Grand Lighting of the Conservatory, and it will build through a three-hour jamby a band of ’60s survivors at a stage set up along John F. Kennedy Drive near the Conservatory. “Photosynthesis” will run in sequences of 15 or 20 minutes then start up again, with the lighting effect created by 10 projectors built into the refreshment kiosks outside the Conservatory. The artwork is a collaboration between Davis’ nonprofit studio, Illuminate, and Obscura Digital, known for lighting big structures like the Sydney Opera House.