This perennial has upright foliage from the tubers and forms a clump. It has dark green lanced-shaped leaves with olive green markings and wavy margins. The tiny yellow tube-shaped flowers appear in a spike amongst the foliage from late spring to early summer.

Hardiness zones 11 to 12

Calathea lancifolia is naturally found from in North America from Mexico to Ecuador growing in the understorey of forest in moist humus rich, well drained soil in a semi shaded protected humid position and is frost and drought tender. 

The Rattlesnake Plant is grown for its attractive foliage. It is used in small or tropical gardens along front borders or used around a water feature. It is also grown as an indoor and glasshouse specimen and establishes from division in 1 to 2 years. It is suitable for coastal regions and is used as a ground cover. ID 629

Calathea (kal-aTHEE-a / ka-LAY-thee-a) insignis (IN-sig-nus) 

Marantaceae (MAR-an-TAY-see-ee)
Arrowroot