Alocasia ‘Black Cobra’

Parentage and habitat background

Alocasia ‘Black Cobra’ is a hybrid of Alocasia scabriuscula and ‘Black Dragon’. Indonesian hybridist Mas Eko introduced it around 2021.

Alocasia scabriuscula, one side of the cross, ranges from swampy lowland forest and riverbanks to well-drained hill forest and disturbed ground in Borneo. The other side comes through the ‘Black Dragon’ line, whose wild ecological setting is unknown, so this hybrid joins a broadly adaptable Bornean species with a less certain jewel-Alocasia background.

Growing corm-forming aroids indoors

• Light: Keep Alocasia ‘Black Cobra’ in bright shade or filtered light. Avoid hot direct sun; weak light slows growth and weakens the petioles.
• Watering: Water as the surface begins to dry. Small root balls dry quickly, but corms should never sit in soggy mix or standing water.
• Humidity and airflow: Aim for high humidity. A dry room often requires a humidifier or cabinet; add gentle airflow and dry wet leaves promptly.
• Substrate and repotting: Let a new plant settle in its nursery pot. Later, choose a pot only slightly larger than the root system.
• Feeding: Use a complete fertiliser at a low dose sparingly while growth is active. Feed less often when growth or available light decreases.
• Leaf care: Use a soft brush or barely damp cloth without pressing into the texture. Check recessed veins for pests.

Troubleshooting Alocasia ‘Black Cobra’: leaves, petioles and roots

• Soft stem base or a sour-smelling root ball: A soft base, sour smell or roots that lose their outer layer points to active root or stem damage. Isolate the plant, keep firm tissue and replace wet collapsed substrate with a fresh airy mix. The root-rot guide
• Bleached tan patches or dark water-soaked areas: Dry tan patches on the exposed side fit sudden sun. Dark, water-soaked tissue after contact with cold glass or a draught is consistent with chilling. Correct the exposure and watch for the damaged edge to stop expanding.
• Trace the symptom into the roots, before adding more water: If the visible symptom and pot moisture disagree, inspect the lower system of Alocasia ‘Black Cobra’. Firm pale roots and a solid base support recovery, while slipping outer layers, internal browning or a sour smell show that the response must begin below the leaves, petioles and roots. If the roots are firm and the mix is dry, water the entire root ball and drain it. Soft roots in damp mix at the bottom of the pot need inspection and removal of collapsed tissue, not more water.

Alocasia ‘Black Cobra’ is toxic to pets

• Alocasia ‘Black Cobra’ is toxic to cats and dogs.
• Chewing releases insoluble calcium oxalate crystals, which can cause immediate mouth pain, drooling and difficulty swallowing.
• Contact a veterinarian promptly after suspected chewing, especially if swelling or breathing problems occur.

What scabriuscula, baginda and reginula mean

Its parent names include scabriuscula, meaning “somewhat rough”, baginda, an Indonesian honorific meaning “majesty”, and reginula, meaning “little queen”. Alocasia combines the Greek prefix a-, meaning “without” or “lacking”, with Colocasia, the name of a related aroid genus.