Possible Clues:

• Fungi growing on plants
• Being long-suffering, we go back and have fun with Gus
• Gentle sheep, almost a threat to plants
• Fungal coating on plant
• Bathroom cleaner target
• After what's not 29 down, we turn up to have fun with Gus
• Fungi caused by moisture
• Fungus that produces a white growth on organic matter
• We bounce back up after moderate attack of disease
• Humidity problem