From 1985 through 1987, Kingsolver was a freelance journalist by day, but she was writing fiction by night. Married to a chemist in 1985, she suffered from insomnia after becoming pregnant the following year. Instead of following her doctor's recommendation to scrub the bathroom tiles with a toothbrush, Kingsolver sat in a closet and began to write The Bean Trees, a novel about a young woman who leaves rural Kentucky (accent intact) and finds herself living in urban Tucson.

The Bean Trees, published by HarperCollins in 1988, and reissued in a special ten-year anniversary hardcover edition in 1998, was enthusiastically received by critics. But, perhaps more important to Kingsolver, the novel was read with delight and, even, passion by ordinary readers. "A novel can educate to some extent," she told Publishers Weekly. "But first, a novel has to entertain-that's the contract with the reader: you give me ten hours and I'll give you a reason to turn every page. I have a commitment to accessiblity. I believe in plot. I want an English professor to understand the symbolism while at the same time I want the people I grew up with-who may not often read anything but the Sears catalogue-to read my books."

For Kingsolver, writing is a form of political activism. When she was in her twenties she discovered Doris Lessing. "I read the Children of Violence novels and began to understand how a person could write about the problems of the world in a compelling and beautiful way. And it seemed to me that was the most important thing I could ever do, if I could ever do that".