Anthurium crassinervium Karma Karma Birdnest Anthurium
Anthurium crassinervium Karma, commonly known as the Karma Birdnest Anthurium, is a bold, sculptural tropical plant admired for its thick, leathery leaves, prominent central veining, and compact, upward-arching growth habit. Native to the mountainous regions of Central and South America, A. crassinervium is known as a birds nest-type Anthurium, forming a tidy, symmetrical rosette of long, lance-shaped leaves that emerge vertically and gently spread as they mature. The Karma cultivar is selected for its particularly clean form and glossy foliage, making it a popular choice for contemporary interiors and minimalist plant styling. Though not grown for its flowers, it may produce a pale, slender spadix with time. This species is one of the more forgiving Anthuriums, tolerating moderate indoor conditions as long as humidity and airflow are managed. A perfect specimen plant for those seeking bold greenery without excessive fuss.
Light Requirements
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Indoors: Prefers bright, indirect light. Will tolerate medium light but grows best with good ambient brightness.
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Direct sun: Avoid prolonged direct sunlight, which may cause leaf burn or fading.
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Low light: Growth may slow and foliage may become leggy or less glossy.
Temperature & Humidity
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Ideal temperature: 1828C (6582F)
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Minimum temperature: Keep above 15C (59F); protect from cold draughts or sharp temperature changes.
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Humidity: Thrives in moderate to high humidity (5070%). Will benefit from a humidifier or pebble tray in drier rooms.
Watering Needs
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Watering frequency: Water when the top 35 cm of soil is dry. Keep soil lightly moist but never saturated.
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Winter: Reduce watering slightly when light and temperatures drop.
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Water quality: Use rainwater or filtered water to avoid mineral deposits on foliage.
Soil & Repotting
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Soil type: Loose, well-draining mix. Use a blend of houseplant compost with orchid bark, perlite, and a touch of coco coir or sphagnum moss.
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pH: Slightly acidic to neutral (5.56.5)
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Repotting: Every 12 years or when rootbound. Choose a container with good drainage and not excessively oversized.
Feeding
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Growing season (springsummer): Feed monthly with a balanced liquid fertiliser, diluted to half strength.
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Autumnwinter: Feeding can be reduced or paused depending on light levels and temperature.
Pruning & Maintenance
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Pruning: Minimal. Remove any yellowing, damaged, or older leaves at the base to maintain a clean silhouette.
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Leaf care: Wipe with a damp, soft cloth to remove dust and maintain the glossy appearance.
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Airflow: Ensure good air circulation to prevent fungal issues, especially in higher humidity environments.
Propagation
Pests & Problems
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Common pests: Spider mites, thrips, mealybugs, and aphids more common in dry air or overcrowded areas.
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Symptoms: Speckled leaves, webbing, sticky residue, or stunted growth.
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Treatment: Wipe leaves and treat with neem oil or insecticidal soap. Increase humidity and isolate if needed.
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Common issues:
Toxicity & Safety
Indoor Care Highlights
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A beautifully symmetrical, glossy-leaved Anthurium ideal for bright rooms, desks, and decorative planters.
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One of the easier Anthuriums to grow indoors, with good tolerance to standard room conditions.
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Works well as a statement plant or part of a structured foliage display.
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Pairs wonderfully with other low, architectural plants such as Sansevieria, Zamioculcas, or Aspidistra.
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A stylish, low-maintenance choice for both seasoned collectors and interiors enthusiasts.
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