The `Mirror, Mirror` actress says she and husband Danny Moder try to be as environmentally-friendly as possible so they produce their own vegetables and try not to waste anything they eat.
Julia - who has three children, seven-year-old twins Phinnaeus and Hazel, and Henry, four, with Danny said: "We very much try to limit our impact. A family of five can produce a lot of waste, so we compost and have chickens, so that takes care of most of our food waste. We don`t use any superfluous paper products in our house, no paper towels or Ziploc bags for lunches. In fact, our school has a waste-free lunch policy. We have solar shingles on our roof, I drive a bio-diesel and a Prius.
"We have a lettuce garden because I don`t like to buy lettuce in a plastic box. That just makes me have a pain in my stomach."
Julia, 44, also revealed how she hasn`t really embraced technology and doesn`t like social media.
She told the Independent newspaper: "I`ve never seen Facebook but I did see `The Social Network`. I`ve never had Twitter. I email and text but that`s it."