Anthuriums are part of a large tropical plant family that has over 800 species. The most common variety has a large, waxy, heart-shaped red flower with a protruding style in the center and dark green, heart-shaped leaves. Most anthuriums originally came from Central and South America, where they grow under tropical rainforest canopies. Their native habitat gives us a clue as to the conditions these flowering plants need: warm weather, rich, loamy soil, moist conditions with high humidity and shade. With just a bit of care, you can make this plant produce lots of beautiful flowers in your home during the summer months.
Grow your anthurium in a pot indoors and give it the conditions it favors to keep it healthy and more likely to produce flowers. These conditions include filtered sunlight and a well-drained potting soil, into which you have added peat moss, pine bark and perlite or vermiculite. Anthuriums also need humidity of 70-80 percent and temperatures between 70 and 90 degrees Fahrenheit.
Water your anthurium twice each week because they like to be moist, but never soggy, which can result in the main stem rotting.
Keep a plant saucer filled with pebbles under your potted anthurium to help keep the humidity high around the plant.
Fertilize your anthurium for the first time several months after you plant it. Use a balanced, time-release plant food with an N-P-K ratio of 3:1:2 and mix it to one-fourth strength. Repeat this application every 2-3 months until your plant is 1 year old.
Apply a low nitrogen or "blossom booster" fertilizer to your anthurium when it is about 1 year old. You can use a plant food designed for orchids; a good N-P-K ratio is 0-10-10. Repeat this application once each month for the plant's entire blooming sseason, from spring through fall.