Possible Clues:

• Malarkey
• Black wood — it shows rot
• British trees contain early sign of dry rot
• Relatively simple tip to make moonshine
• Bunk's ladder broken during party
• Having less hair to tear? Nonsense
• Tree died after onset of blight -- wood rot
• Hint below more outright gibberish
• Senseless rubbish
• Not so hairy — rubbish!