A true giant of the aroid world and one of the most dramatic foliage plants in existence, Anthurium metallicum is a high-elevation Colombian native that commands attention in any collection. Its enormous, velvety leaves are a deep forest green with a distinctive metallic sheen — an iridescent quality that shifts subtly in different lighting and gives the plant its name. Leaves can reach extraordinary sizes in mature specimens, with prominent, pale venation that adds further architectural detail. A relatively slow grower that rewards patience, this is a plant that serious collectors actively seek out and rarely part with. It is best appreciated as a long-term investment piece — one that becomes more spectacular with every new leaf.

Light Bright indirect light is ideal, mimicking the dappled canopy conditions of its cloud forest home. Avoid direct sun entirely, which will dull the prized metallic sheen and scorch the velvety leaf surface. It can tolerate moderate light levels but will grow more slowly and produce smaller leaves without adequate brightness.

Water Water when the top inch or so of the medium has dried out, then water thoroughly. A. metallicum appreciates consistent moisture but is sensitive to overwatering and poor drainage. The combination of a well-draining mix and a pot with drainage holes is non-negotiable. Root rot is the most common way this plant is lost.

Humidity High humidity is essential — 70% and above is ideal, reflecting its cloud forest origins. Below 50% the large velvety leaves are prone to browning edges and a loss of their lustrous texture. A dedicated humidifier, greenhouse cabinet, or grow tent is strongly recommended for indoor cultivation.

Soil / Medium A very chunky, airy aroid mix is best. Combine orchid bark, perlite, and coco coir with generous proportions of bark to keep the mix open and well-aerated. Some growers add horticultural charcoal for additional drainage and root health. Avoid any mix that compacts or retains excess moisture around the roots.

Fertilizer Feed with a balanced or slightly phosphorus-forward liquid fertilizer at half strength every 2–4 weeks during active growth. This is not a heavy feeder, but consistent low-level nutrition supports the development of large, healthy leaves. Reduce feeding in winter when growth slows.

Temperature As a cloud forest species, it prefers cooler to intermediate conditions — ideally 60–78°F (15–26°C). It can be more sensitive to high heat than many other anthuriums, and prolonged temperatures above 85°F (29°C) may cause stress. Avoid cold drafts and never expose to temperatures below 55°F (13°C).

Pests Spider mites, thrips, and scale are the most common threats. The large velvety leaves can harbor pests on their undersides, so regular inspection is important. Treat early and thoroughly with insecticidal soap or a systemic option for persistent infestations. Keeping humidity high naturally deters spider mites.

Toxicity Toxic to humans and pets if ingested, containing calcium oxalate crystals that cause irritation and swelling of the mouth, throat, and digestive tract. Handle with care and keep out of reach of children and animals.

Propagation Best propagated by division of offshoots or basal pups when they have developed their own root system. Stem cuttings are possible but less reliable on this species. Given its slow growth rate, division opportunities are infrequent — most growers choose to keep their plant intact rather than divide it.