HOMER GLEN, Ill. — Pumpkin farms used to involve a simple hayride out to the field to pick a pumpkin. But today at farms like Bengtson’s Farm, it can be a full-day experience complete with animatronics, a petting zoo and delicious treats. Bengtson’s Farm is a boy’s dream-come-true for Dan Bengtson, who sketched plans for his own farm after visiting his first pumpkin farm in...