‘Wabi’ means something aesthetic, imperfectly beautiful and natural and ‘kusa’ means ‘grass’ or ‘plant’.
Wabi-kusa are balls of substrate that are covered with plants and grown in their terrestrial forms. These substrate balls do not require any planting, instead can be placed directly into a small glass container or just be placed on the aquarium’s substrate.
Note: Wabi Kusa require lights and fertilisers for optimal growth. Do look up fish compatibility as well, before ordering.