Related Clues:

• It takes months, reportedly, to produce crop
• You can hear more than one hawthorn plant with ears
• You'd be lost here if it didn't sound so corny!
• Color of corn
• Growth one finds in labyrinth
• I entered warren carrying cereal
• Tall cereal grass grown especially in America
• Childish puzzle, you say. It's corny
• American corn
• Tall cereal grass
• Sweetcorn
• Corn sounds like a puzzle, visually
• Native American corn
• Popcorn, e.g
• Corn plant, one seen in labyrinth