It is 1983 when Achille Castiglioni imagines a subtle, dynamic presence in its composition, flexible in its complex overall design, destined to welcome the flat plants in their respective pots, supported (as if they were premorous hands) by circular plates arranged rhythmically along the height of the structure, while horizontally every element is free to rotate of 120 degrees, so as to better organize the arrangement of plants of different dimensions, in this small domestic "vertical jar", towards an optimal encounter with. That's how it was born Tree, the iconic portavasi removable signed Zanotta.