Possible Clues:

• Last of all, takes garlic with chive from vegetable plot
• 'Plot, plan (6)'
• 'Counsel, himself and I all plot together (6)'
• School English assigned to this person in timetable?
• "Ponzi" or "rhyme" follower
• The plot the lawyer, himself and myself have together
• Connivance
• One may be cooked up
• Conive, intrigue
• Be up to something