Possible Clues:

• Evergreen salesman — one journalists upset
• The berries of this shrub are used in making gin
• Shrub
• Its cones are used to flavour gin
• Shrub used to flavour gin
• Soldiers leave subordinate agent climbing tree
• Ripe nuts on neighbour of May tree
• Canadian Evergreen
• After most of month shaking ripe tree
• Plant producing berries used to flavour gin