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A kenzan used in an ikebana flower arrangement

A kenzan (剣山), also called spiky frog, is a specific device used in the Japanese art of flower arrangement ikebana for fixing the flowers in the container. It consists of a heavy lead plate with erected brass needles where the stipes are fixed.

The name kenzan (剣山) literally means sword mountain. It was introduced by the Moribana style of ikebana.[1]

Another flower holder without spikes but only holes is called shippo dome (七宝留め) and is used by the Saga Go-ryū school and sometimes other schools.


  1. ^ Keiko's Ikebana: A Contemporary Approach to the Traditional Japanese Art of Flower Arranging, p. 45.

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