The beautiful brass coloured kenzan adds a brilliant warmth to your floral arrangements. Over time and with use the brass will develop a slight tarnish, giving it a more natural and organic look. Normally, a rectangle kenzan is used for a square or rectangular vase or vessel, and a round one for a circular shape. 

A kenzan (剣山), also called spiky frog, is a specific device used in the Japanese art of flower arrangement ikebana (生花) 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. Since they come in many different sizes and shapes, it can be used with almost any vase or bowl to make beautiful floral arrangements. The needles of the Kenzan provide stable support for all types of plant stems and branches, allowing your creativity to soar without fear that your arrangements will fall over. For larger kenzan, a removable rubber cover is attached to the bottom so as not to damage the vessel. 

When choosing which kenzan is right for you, make sure to first measure the opening of your vessel and choose a size that is small enough, while keeping in mind that heavier kenzan will be easier to balance. Select a shape that works with your vessel, type of flowers, and arrangement design; round is most common, but many other shapes are available. Different coloured kenzan serve different purposes as well. The gold brass colour stands out a little more and can add a warm glow to your flowers. A black kenzan would serve a calm and discreet purpose in a dark colour vessel. 

Each piece is individually constructed by a skilled craftsman in Niigata prefecture, Japan, so there may be very slight variations in weight and dimensions.