Related Clues:

• Something you may do in the spring
• Part of the flora
• Grower in a pot
• Greenhouse growth
• Oxygen producer
• Botanist's study
• Flower or weed
• Covert agent
• Carnival shill, e.g.
• Audience member who's really a performer
• Many a housewarming gift
• Audience shill
• Mole, for example
• Greenhouse buy
• Herb or tree