Possible Clues:

• Informer, informally
• Packed item that might fly away?
• S&P stock for finks?
• Grass growing wild e.g. on topsoil
• Police informer's money's returned to victim of con
• Mob's bane
• Canary, relative of 8 down?
• Grass gone, topsoil spread
• Informant, informally
• Informant