There's nothing difficult about picking the perfect corn. You'll probably be able to tell very quickly whether or not it's fresh based on appearance and smell! Look for corn that is wrapped tightly in its green husks. It's OK if it feels a bit moist. Silk should be soft, perky, and moist. Not sticky, brown, and going bad. Peel the husk a bit and choose corn with white kernels or yellow kernels in tight rows that are plump.