Related Clues:

• Vitamin C source
• Theme of this puzzle
• Nursery items
• Still-life subject
• See 4-Down
• Plain lack
• Apple or pear
• Arbor Day honorees
• Walnuts and others
• Corners
• They're for the birds
• It may be in a jam
• Compote ingredient
• Forest denizens
• Type of salad