Beans, corn and squash are the "three sisters" of the indigenous American diet. When planted in close proximity, these crops use one another's agricultural characteristics — the corn's sheltering height, the beans' soil-enhancing nitrogen, the squash's weed-deterring vines — to thrive. Celebrate the sisters and other native food traditions at the Haskell Indigenous Food Festival at Haskell Indian Nations University (the corner of Barker Street and Indian Avenue in Lawrence, 785-749-8404). Events tonight take place from 7 to 10 in Haskell Auditorium and include music and a presentation by actress and environmentalist Casey Camp-Horineck of the Ponca Nation. The fest begins at 1 p.m. Saturday at Stidham Union and includes workshops, a cooking contest and a community potluck. Admission is free. For a full description of events and updated schedule, search Haskell Indigenous Food Festival on Facebook.