The anthurium is a tropical epiphyte that thrives in hot, humid conditions. Epiphytes grow on the branches of trees and on rocks, and develop root systems that absorb moisture and nutrients from the air. Because of its epiphyte nature, anthuriums grow best in a soil-less environment with good drainage and high humidity. Growing anthuriums successfully requires careful attention to humidity levels, soil requirements and watering. Keep anthuriums in a shaded area where they will get light filtered through a canopy of other plants.
Plant anthuriums in a soil-less mixture; the University of Florida Extension recommends a mix of equal parts peat, perlite and bark or a simple peat, perlite mixture. Other suitable planting mediums include macadamia nut shells, chipped tree ferns, wood shavings, coconut husks, sand and leaf mold.
Water frequently during hot, dry weather. Thoroughly wet the planting medium around the roots with clean water. Let the medium dry out slightly before the next watering. When the top of the soil mixture begins to feel dry to the touch, add more water. The roots should be consistently slightly damp rather than saturated or in standing water.
Temperature and Humidity
Anthuriums grow best when the temperature is between 60 and 95 degrees F. Night temperatures below 60 degrees will stunt the plants growth. Humidity levels between 70 and 80 percent are idea. In cool, dry climates, keep potted anthuriums in a humid bathroom or a heated greenhouse.