Lemons have been around for thousands of years. In all the articles I examined, I found that experts can't agree on where they originated. Speculation says they come from Northern India, Burma, and/or southern China. Lemons are a cross breed between lime and citron. Citrus has long been domesticated and genetically altered. One of the more easily manipulated plants, lemons have been cross-bred with a variety of other citrus. No matter where they are from, this remains fact.