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For the video-game, see Ryū ga Gotoku Kenzan!.
A kenzan, 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.
- Keiko's Ikebana: A Contemporary Approach to the Traditional Japanese Art of Flower Arranging, p. 45.