Possible Clues:

• Elitist returned with excellent Oriental art
• Shrinking shrubbery?
• Art of growing dwarfed trees
• Little growth in good French spoken � not to mention Deutsch
• Tree's fine after black wood's tips cut off
• An elitist backing one form of 'potty' art
• Dwarf tree cultivation
• One's a pretentious type about specialist arboriculture
• Japanese art that may produce a little ash?
• Dwarf (tree)