Related Clues:

• Tannin-rich nut
• Hard nut to crack?
• It's often lower than dirt
• Open position?
• Propagative part of a plant
• Oak starter
• Sesame product
• Edible sunflower part
• Canary snack
• Future flower
• It may be for the birds
• It's often squirreled away
• Burpee unit
• Squirrel's treat
• Bit of finch fare