Possible Clues:

• There may be a whale of a lot of seeds there
• Are there a whale of a lot of seeds there?
• There could be a whale of a lot of seeds in them
• Mustard plant features
• Okra's are sticky
• Containers of peas
• Catalpa tree features
• Extra note about ordinary day in schools
• Legume holders
• They're evacuated during the shelling