BACKYARD SECRET – A FEMALE MONARCH CAN LAY UPWARDS OF 1,000 + EGGS backyardwildlifeconnection by Terry W.Johnson 3 years ago One the average, a female monarch butterfly lays 300-500 eggs during her lifetime. However, the record number eggs laid by a single monarch are 1,175. Share this: Email a link to a friend (Opens in new window) Email Share on Facebook (Opens in new window) Facebook More Share on X (Opens in new window) X