Anthurium Clarinervium

Light Requirements

Bright Indirect. Place within 3-5 feet of a south or east-facing window, out of direct sun. Direct afternoon sun will scorch leaves.

Watering

Let the soil dry out about 80% of the way before you water again. That's drier than most aroids, and it's intentional. During active growth, that works out to roughly every 5-7 days; in winter, every 10-14 days. Use room-temperature rainwater or filtered water. Cold tap water shocks the roots, and you'll see it in the leaves within a few days.

Humidity

Target humidity: 60-80%. A room humidifier is the most reliable solution. Pebble trays and misting provide minimal benefit compared to a small ultrasonic humidifier near the plant.

Temperature

Keep between 65-73°F. Avoid cold drafts from windows in winter and hot air from vents year-round. Most tropical houseplants suffer below 55°F and should never be exposed to frost.

Soil and Potting

A fast-draining aroid mix: orchid bark, peat moss or coco coir, and perlite. You can add crushed charcoal or pumice if you want. Target pH 5.5-6.5. This plant grows on limestone outcrops in the wild, so its roots expect fast drainage and calcium-rich substrate. A dense potting soil will rot it.

Propagation

Division at repotting time is your best bet. In spring, separate the root ball into sections, making sure each one has healthy roots and 2-3 leaves. Pot them in fresh aroid mix and keep humidity high for about 2 weeks while the roots settle in. Stem cuttings work too. Let the cut end callous for a few hours before you stick it in moist mix or water.

Common Problems

Brown tips are the most common complaint, and they almost always point to low humidity or underwatering. A new leaf every 3-6 weeks is completely normal, so don't panic if growth feels slow. High humidity is great for the plant but also invites spider mites, mealybugs, and fungus gnats, so check under the leaves regularly.

Worth Knowing

Toxicity