Zucchini plants depend on sunlight to set and ripen the squash, known as the "fruit" of the plant. The sun warns the soil to the necessary minimum of 60 degrees at which fruit setting can begin, and it also allows the plant's male and female flowers to bloom. Without pollination, no setting and ripening can occur in zucchini plants.
About this Author
Melissa Jordan-Reilly has been a writer for 20 years, both as a newspaper reporter and as an editor of nonprofit newsletters. Among the publications in which she has published are, "The Winsted Journal," "Taconic" and "Compass Magazine." A graduate of the University of Connecticut, Jordan-Reilly also pursues sustainable agriculture techniques and tends a market garden at her Northwestern Connecticut home.