Important! Anthurium are poisonous if ingested, so be very careful if you have pets and/or small children. The sap can also cause skin irritation.
Flowering Anthurium needs bright, indirect light (direct sunlight will scorch the leaves and flowers!). Low light will slow growth and produce fewer, smaller “flowers.” The Anthurium prefers very warm temperatures (70-90°F), but don’t worry – these plants are extremely adaptable and can flourish in typical household temperature ranges. However, be careful of temperature extremes: if your thermostat drops below 50°F, the Anthurium will stop growing; if your house gets too hot, your Anthuriums will wilt.
Water thoroughly when the first inch of the soil becomes dry to the touch, stopping when water starts draining from the drainage holes. Avoid overwatering (Anthurium roots are susceptible to rot!). The more light and warmth that your Anthurium gets, the more water it will need, so check the soil for dryness every few days. These plants will provide signs of stress or thirst, so pay attention: thirsty plants will be light if you lift them and will have droopy or puckering leaves. You will not need to water as often in the winter when the plant is not actively growing. Most Anthuriums thrive on humidity, so mist the leaves regularly with water to increase humidity and every so often put it under a cold shower to wash off the leaves. Filling small trays with pebbles and water and grouping indoor plants together can slightly increase the humidity immediately surrounding your plants.
During the growing season (spring and summer), feed your Anthurium once a month using a complete, ¼-strength liquid fertiliser. Note -- too much fertiliser can do more harm than good. To encourage more blooms, use a fertiliser higher in phosphorus during the growing season.