thumb|A kenzan used in an ikebana flower arrangement
thumb|A kenzan used in an ikebana flower arrangement
A kenzan (剣山), also called a spiky frog or pin frog, is a device used in flower arranging (especially ikebana, or Japanese flower arranging) for fixing the flowers in the container. It consists of a heavy plate, usually lead, with erected needles often made of brass where stipes are fixed.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).