What is a Philodendron melanochrysum?
Philodendron melanochrysum — commonly called the Black Gold Philodendron — is a hemi-epiphytic climbing aroid native to the rainforest understorey of Colombia and Panama. What sets it apart from the hundreds of other philodendrons is its foliage: leaves can reach 24 inches or more on a mature climbing plant, are velvety near-black or very deep green, and flash with golden-yellow veining that seems to glow in the right light. New growth unfurls copper-bronze before darkening, making every new leaf an event. In the collector aroid market it is considered a benchmark species — the plant that made velvet aroids a collector category.
How much light does a Philodendron melanochrysum need?
Bright, indirect light is the key to unlocking this plant’s potential. In low light the leaves remain small and lose the distinctive velvety depth that makes the species desirable. In harsh direct sun the thin leaf surface scorches and bleaches. The ideal spot is a few feet back from a south- or east-facing window, or in the bright ambient light of a north-facing window with supplemental grow lighting. Consistency matters — the plant adapts to a stable light level and reacts poorly to sudden changes.
Why does Philodendron melanochrysum need a moss pole?
Because it is a climbing plant by nature, and its genetics literally switch on a different developmental programme when the plant finds something to grip. Juvenile plants grown horizontally or in hanging baskets produce leaves under 4 inches. The same plant attached to a moist moss pole or coco coir totem will begin pushing adult leaves that are 12, 18, even 24 inches long within a few growth cycles. The aerial roots that grip the pole also absorb moisture, which is why keeping the pole damp further accelerates the process.
How do you water a Philodendron melanochrysum?
Water when the top 1–2 inches of the growing medium feel dry — roughly every 1–2 weeks, depending on temperature and pot size. Use a chunky aroid mix (bark, perlite, and a small amount of potting compost) that drains quickly and doesn’t compact. Overwatering is the primary cause of death in melanochrysum; roots sitting in soggy substrate rot fast. During active growth in spring and summer, fertilise monthly with a balanced liquid fertiliser at half strength.
How much humidity does a Philodendron melanochrysum need?
Aim for 60–70% relative humidity. Below 50% the new leaves tend to emerge smaller and the velvet texture is less pronounced; chronic low humidity leads to crispy edges and stunted growth. A pebble tray, daily misting of the moss pole (not the leaves), or a room humidifier all help. Grouping it with other humidity-loving plants raises the local humidity as the plants transpire together.
Is Philodendron melanochrysum toxic to pets?
Yes — as a philodendron, the ASPCA lists it as toxic to cats and dogs. The insoluble calcium oxalates in the leaves and stems cause oral irritation, excessive drooling, and vomiting if chewed. Because melanochrysum is a climbing plant that can reach ceiling height, ensure trailing vines are secured and out of a pet’s reach at every stage of the climb.