One of Lanette Sobel’s most trusted business partners is a worm. Actually, she works with lots of worms. They’re essential to her specialized six-acre farm in Homestead. While many of her agricultural neighbors grow food, her mission is disposing of it in a way that is better for the environment.Fertile Earth Worm Farm is the largest commercial composting operation in South Florida, diverting tons of food scraps from landfills and transforming it into dark, crumbly garden soil. “Anything that used to live can be composted. We all turn back to stardust,” said Sobel. “To me, this is the basis of…