Possible Clues:

• Belladonna causing a dreadful crime - city leaves on tree
• A protein dispersing poison
• Poison pirate on waves
• Drug one's blown taking a trip
• Poison a tree with rot spreading inside
• Might one die from the shades of night, perhaps?
• Drug, on a trip, smashed on Ecstasy
• Poisonous substance derived from paint and ore
• A protein compounded of poison
• Bad rot inside a tree - poison