Possible Clues:

• Fanatical coleopterist reported to be chewed up
• Mild stimulant from a palm tree
• Wager the Spanish fiend supplies a narcotic
• Seed of a palm chewed (with its leaves) as a narcotic
• Certain palm fruit
• Mild stimulant from a tree
• Oddly blue nettle chewed as narcotic
• Narcotic proving gamble, with learner driver cutting strain when reversing
• Husband leaves chapel with case for palm seed