Echinodorus Marble Queen is a rare type of Amazon Sword which green leaves with white markings throughout. Like most swords, they should be planted directly into the substrate. When using inert substrates such as sand or gravel, it is important to supplement the plants with root tabs as Echinodorus are heavy root feeders. The plant can be grown both emersed and submerged and often times, new leaves can grow to the top above the water line. Overall, this plant is easy and undemanding and very suitable for larger tanks