Ikebana is a disciplined art form in which nature and humanity are brought together. Apart from focusing mainly on the bloom Ikebana often emphasizes other areas of the plant, such as its stems and leaves, and draws emphasis towards shape, line, form. Ikebana is a creative expression but it  has certain rules governing its form. The main rule is that all the elements used in construction must be organic, be they branches, leaves, grasses, or flowers.