If you’re searching for a truly special houseplant, look no further than the anthurium watermaliense. This plant’s rare and captivating beauty is what makes it a grail for many collectors. Its dramatic, dark foliage and unique flowers set it apart from the more common anthuriums you see. But its rarity means good care information can be hard to find. Don’t worry, this guide will give you the practical steps you need to help this stunning plant thrive in your home.
Anthurium Watermaliense
Often called the “Black Anthurium,” this plant is native to parts of Central and South America. Its most striking feature are the long, tail-like flowers called inflorescences. These are usually a deep purple-black or maroon color, which is very unusual. The leaves are large, velvety, and heart-shaped, often with prominent light-colored veins. It’s a slow grower, which is one reason it remains less common in the market.
Ideal Growing Conditions
Getting the environment right is the most important step for success. This plant comes from humid, tropical forests, so we need to mimic that as close as possible.
Light
Anthurium watermaliense needs bright, indirect light. Direct sun will quickly scorch its beautiful leaves. A spot near an east-facing window is perfect. A north-facing window can work too, but growth may be slower. If you only have a south or west window, use a sheer curtain to filter the light.
Temperature & Humidity
This is a warmth-loving plant. Keep it in a room between 65°F and 80°F (18°C – 27°C). Avoid cold drafts from windows or doors in winter. Humidity is crucial. Aim for 60% or higher. Here’s how you can increase humidity:
- Use a humidifier right next to the plant (most effective method).
- Place the pot on a tray filled with pebbles and water (ensure the pot sits above the water).
- Group it together with other humidity-loving plants.
- Mist the leaves regularly, but do this in the morning so they dry by nightfall.
Watering and Soil Needs
Overwatering is the fastest way to lose this plant. The goal is to keep the soil consistently moist but never soggy.
Watering Routine
Check the soil weekly. Stick your finger about an inch into the potting mix. If it feels dry, it’s time to water. Water thoroughly until it runs out of the drainage holes, then let the pot drain completely. Never let the plant sit in a saucer of water. In winter, you’ll water less frequently as the plant’s growth slows.
The Right Potting Mix
This anthurium needs a chunky, airy mix that drains incredibly well. A standard potting soil will hold too much water and cause root rot. You can make a great mix yourself:
- Start with a base of orchid bark (40%).
- Add perlite or pumice for aeration (30%).
- Include coconut coir or peat moss for moisture retention (20%).
- Mix in a little horticultural charcoal (5%) and worm castings (5%) for nutrients.
This combination allows roots to breath while holding just enough moisture.
Feeding and Repotting
Feeding supports its growth, but be gentle. Use a balanced, liquid fertilizer diluted to half strength. Apply it once a month during the spring and summer growing season. Do not fertilize in the fall and winter. Too much fertilizer can burn the sensitive roots.
Repotting is only needed every 2-3 years because this plant grows slowly. Choose a pot only 1-2 inches larger in diameter. A pot that’s too big holds excess wet soil. The best time to repot is in the spring. Be very careful with the roots during the process, they can be fragile.
Common Problems and Solutions
Even with great care, you might see an issue. Here’s how to troubleshoot.
- Yellow Leaves: This is often a sign of overwatering. Check your soil moisture and drainage immediately. It could also mean the plant needs more humidity.
- Brown Leaf Tips or Edges: Usually caused by low humidity or underwatering. Increase your humidity efforts and check your watering schedule.
- No New Growth: Remember, this is a slow grower. But if it’s completely stalled, assess light levels and consider a weak fertilizer solution in the growing season.
- Pests: Watch for common pests like spider mites, mealybugs, and scale. Wipe leaves regularly with a damp cloth. For infestations, use insecticidal soap or neem oil, applying it to all leaf surfaces.
Propagation Tips
You can propagate anthurium watermaliense by division when you repot it. This is the simplest method. Gently separate a section of the plant that has its own roots and at least one or two leaves. Pot this new division into its own small container with fresh, airy mix. Keep it warm and humid as it establishes. Propagation by seed is possible but very difficult and slow, usually left to specialist growers.
FAQ Section
Is Anthurium watermaliense toxic?
Yes, like other anthuriums, it contains calcium oxalate crystals which are toxic if ingested. Keep it out of reach of pets and small children.
Why are the flowers on my black anthurium green?
The color can vary. Sometimes new inflorescences start greener and darken with age. Light levels can also influence the depth of color.
How often does Anthurium watermaliense bloom?
It can bloom sporadically throughout the year when happy, but it’s not constant like some flowering plants. The foliage is the main attraction anyway.
Can I grow it in a terrarium?
It can do very well in a large, well-ventilated terrarium or greenhouse cabinet where high humidity is easy to maintain. Just ensure it has enough space for its leaves.
Where can I buy one of these rare anthuriums?
Check specialized online plant shops, rare plant auctions, or local plant society sales. Be prepared for a higher price tag due to its rarity and slow growth.
Caring for an anthurium watermaliense is a rewarding experience. It asks for a bit more attention to humidity and watering than some common houseplants, but the payoff is immense. When you see those dark, velvety leaves unfurl and a mysterious flower appear, you’ll know your care is working. With the right conditions, you can enjoy this plants unique beauty for many years to come. Remember to be patient, observe your plant closely, and adjust your care as needed.