File:Pescia, museo del bonsai, olea europea stile chokkan (eretto formale), da italia, circa 30 anni.jpg - Wikimedia Commons
Jack Lin Bonsai - Chokkan or Formal Upright Style Bonsai. This technique mimics trees growing naturally in the wild with a straight upright trunk. The shape of the tree is triangular with
Bonsai styles - SOS Bonsai
Chokkan | Formal upright style – Bonsai Today
Formal upright style – Chokkan #1 - YouTube
Chokkan Bonsai Style Trees - YouTube
What Is Bonsai? | Virtual Culture | Kids Web Japan | Web Japan
This beautiful Chokkan (formal upright) juniper : r/Bonsai