Anthurium andraeanum 'Kozue' (Kozue anthurium) care

Light

In the wild anthurium andraeanum 'kozue' grows on the bright edge of a forest canopy, not in the canopy and not in the open. Indoors, that translates to within a metre of an unobstructed window, sheer curtain optional. Wants several hours of bright filtered light at an east window or back from brighter glass. Direct sun scorches the spathes and leaves, while too little light produces stretched petioles and few blooms. The fastest test: a hand held at the leaf casts a soft-edged shadow at noon — sharp shadow means too much sun, no shadow means too little light.

Watering

Aim for when the top 2-3 cm of mix is dry, roughly every 5-7 days in growth for anthurium andraeanum 'kozue', but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Keep the airy mix evenly moist but not soggy; water until it drains and empty the saucer. Use room-temperature, low-mineral water and reduce in winter. Persistent wetness rots roots and yellows older leaves.

Soil and pot

Anthurium andraeanum 'Kozue' grows best in loose, chunky, fast-draining epiphytic aroid mix. Use orchid bark, perlite, coco coir and a touch of organic matter for an open, free-draining medium. Keep pH slightly acidic at 5.5-6.5. Standard potting soil compacts and holds too much water around the roots. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Anthurium andraeanum 'Kozue' sits happiest at around 60-80% humidity and 18-29°C (65-84°F). A rainforest epiphyte that thrives in high humidity; below ~50% leaf tips brown and flowering slows. Provide a humidifier, pebble tray or plant grouping and avoid dry drafts from vents. If you keep the room above 18 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed anthurium andraeanum 'kozue' sparingly. Feed every 4-6 weeks in spring and summer with a balanced or mildly phosphorus-rich houseplant fertiliser at half strength. Anthuriums are light feeders, so under-dose to avoid root burn and salt buildup, and stop feeding in winter. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on anthurium andraeanum 'kozue' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Brown leaf tips — Low humidity or mineral salts from hard water; raise humidity and water with low-mineral water, flushing the mix periodically.
• Few flowers — Insufficient bright indirect light or too much nitrogen; move brighter and use a balanced or phosphorus-leaning feed.
• Yellowing lower leaves — Overwatering and soggy roots; let the top few cm dry between waterings and confirm free drainage.
• Greening spathes — Aging blooms naturally turn green; remove spent flowers at the base and ensure adequate light for fresh colour.

Propagation

Propagate by dividing mature clumps into rooted offsets potted in fresh aroid mix. Stem cuttings bearing an aerial root root well in moist sphagnum. Seed is slow and will not reproduce this named cultivar reliably. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Anthurium andraeanum 'Kozue' is toxic to pets. ASPCA lists Anthurium as toxic to cats and dogs. As an aroid it contains insoluble calcium oxalate crystals; ingestion causes oral irritation, drooling, vomiting and difficulty swallowing. Keep away from pets and children. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Anthurium andraeanum 'Kozue' deep-dive guides

Every aspect of anthurium andraeanum 'kozue' care, each with its own calibrated guide:

• Anthurium andraeanum 'Kozue' watering schedule
• Anthurium andraeanum 'Kozue' light requirements
• Best soil mix for anthurium andraeanum 'kozue'
• Anthurium andraeanum 'Kozue' fertilizing guide
• When to repot anthurium andraeanum 'kozue'
• How to propagate anthurium andraeanum 'kozue'
• Anthurium andraeanum 'Kozue' growth rate & size
• Anthurium andraeanum 'Kozue' cold hardiness
• Anthurium andraeanum 'Kozue' temperature & humidity
• Is anthurium andraeanum 'kozue' toxic to cats & dogs?
• Is anthurium andraeanum 'kozue' toxic to cats?
• Is anthurium andraeanum 'kozue' toxic to dogs?

Featured in these plant shortlists

Anthurium andraeanum 'Kozue' qualifies for 3 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
• Best humidity-loving houseplants — Houseplants that thrive in a bathroom, kitchen, or by a humidifier — selected by documented humidity preference.
• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Anthurium andraeanum 'Kozue' is also commonly called Kozue anthurium.

• Types of anthurium — varieties identified, with care and pet-safety
• Monstera care — light, water and common problems
• Pothos care — light, water and common problems
• Fiddle leaf fig care — light, water and common problems
• All 2464 plant care guides in the Growli library