Here's where you'll find them:

Sat April 14 - 10:30am-3:30pm: Grand Army Plaza (GAP) greenmarket in Brooklyn

Sun April 15 - noon-5:30pm: Whole Foods Market Tribeca (WFMtri)

Wed April 18 - 8:15am-10am: Penn Station + 11am-2:30pm: Union Square greenmarket

Thurs April 19 - 8:30am-10am: Grand Central Terminal  + 11am-2:30pm: Bryant Park

Fri April 20 - 8:15am-10pm: Penn Station + 11am-2:30pm: Union Square

Let the search begin!