Item comes with MARIMO PET STORE guide and packaging Marimo, often referred to as Lake ball or Moss Balls. This can be a rare growth form of the species where the algae grow into large green balls with a velvety appearance. Marimo is a very popular plant in Japan. -The Japanese consider that Marimo will bring good luck and ever-lasting love to your friends or loved ones. It’s easy to take care. Just give some water (can be tap water), ceiling light and love! Most importantly our Marimos are directly imported from Japan! How to grow marimo balls Your marimo friends will grow in tap water at room temperature so long as the water is changed every one or two weeks. The growth rate of Marimo is about 5 mm per year.they grow particularly large, up to 20-30 cm (8-12 inches). All they need is normal household lighting for them to make food, in a different way, indirect sunlight is fine. You must turn them over once in a whilst for them to keep their round shape. Marimo’s are in fact VERY easy to take care of, probably one of the most easiest plants that live in water. you just have to change the water once a week and your done!” make sure NOT to have age killer in the water!!!!” UNKNOWN FACTS ABOUT MARIMO 1* They do not go with the flow unless the water is squeezed out of them. 2* They are NOT moss, they are a very unique type of ALGAE.