Representatives of Dagoba Organic Chocolate of Oregon will be handing out free chocolate bars and herb seedlings in six locations in San Francisco and Berkeley, today through Sept. 13.

The catch? You can find out the general locations and the dates, but not the exact times the freebies will be handed out. Dagoba says it’s a stealth, guerrilla-type operation to maintain the sense of surprise. (Uhh, I’m sure that makes sense in some universe.)

Be on the lookout in Justin Herman Plaza and Union Square in San Francisco today; the Ferry Plaza Farmers Market in San Francisco on Sept. 6; Golden Gate Park in San Francisco on Sept. 7; the University of California at Berkeley campus on Sept. 7; and the Berkeley Farmers’ Market (Center Street at Martin Luther King Jr. Way) on Sept. 13.

Look for similar upcoming giveaways at locations in the Boston and Chicago areas.

It’s all part of Dagoba’s “Seed the Day” promotion. The chocolate company, known for infusing herbs such as rosemary, lavender, and mint into its confections, wants to encourage people to flex their green thumbs more. You can even submit a photo of your own garden on its “Seed the Day” Web site.

Now, if only I could plant a seed that would grow into a towering, plentiful chocolate-bar tree. This chocoholic can dream, can’t she?