Possible Clues:

• Trade new form of danger for the Greens
• Score grade ten, unfortunately, leading to growing concern
• Oddly, Eugene gets trademark for fruit and vegetable place
• Advertise the virtues of The Eden Project for The Greens
• Shop The Greens - is that the plot?
• Fruit and veg centre
• Place commercially growing fruit and veg
• Dark green mat sported where food is grown
• 29 after last nun leaves?
• Growing concern to notice study involves great struggle