Possible Clues:

• Leaving one's boxed remains close to sacrosanct Asian area
• Try tender exotic trees, but they won't grow here
• On journey, endures uncovered berth in Asian region
• What the Tibetan Plateau caused to form
• Much of Mongolia
• Proceed to offer trees to doctor in arid expanse
• Region of Central Asia
• Get lost, and propose hacking trees in Asian wilderness
• Mongolian wasteland
• Tender tree latterly kept in storage, ground lacking a dry expanse