Related Clues:

• Obscenity
• Loam, e.g.
• Dirty reading
• Gardener's supply
• Growing need?
• Soot particle
• Sandblaster's target
• Certain fungus
• Wet dirt
• Dry land
• Tip, and a hint to this puzzle's theme found in five answers
• Sprinkle, as with flour
• Maid's concern
• Facts, for short
• Tom Lehrer's anti-censorship song