Carl_Bergstrom

I suppose we should distinguish between a few different types of "advanced" techniques. I'll list a few off-the-top-of-my-head picks for each.

1. Design and the artistic aspects of bonsai
   
   Dave DeGroot's book.
   Andy Rutledge's e-book
   Naka's book (esp. Volume II)
   
2. Advanced styling techniques and horticultural techniques.
   
   Bonsai Today articles
   
   Is there much else out there English? Plenty of books with example, I know, but are there many really good "how-to" books? (How to airlayer doesn't count as advanced.)
   
3. How to develop a material from stock taking a five to ten year perspective (minimum).
   
   Peter Adams' Bonsai Design: Japanse Maples, Bonsai Design: Deciduous and Conifereous Trees, and Art of Flowering Bonsai.
   
   Kyosuke Gun's Japanese-language books on mini-bonsai (One each for maples, black pine, Prunus mume, etc.)
   
4. Advanced display
   
   Willi Benz' Bonsai Kusamono Suiseki
   International Bonsai articles
   
5. Penjing / Landscape composition
   
   Saburo Kato's book
   Brook Zhao's book
   
6. Examples of mind-blowingly good specimen trees.
   
   Kokufu albums,
   Murata's Four Seasons of Bonsai
   

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Best regards,
Carl

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In love with trees