Alocasia reginula 'Black Velvet'

Species background and habitat

Alocasia reginula ‘Black Velvet’ is the best-known cultivated form of Alocasia reginula. The species was described in 1998 from a plant grown in Florida and is thought to have come from Borneo. Its wild locality and ecological setting remain unknown.

Care for textured aroid foliage and roots

• Light: Give Alocasia reginula ‘Black Velvet’ bright filtered light. Acclimated plants tolerate gentle morning or evening sun; avoid hot midday sun and weak light.
• Watering: Water when the surface begins to dry, checking small pots more often and larger pots deeper. Soak evenly, drain and empty the outer pot.
• Humidity and airflow: Aim for moderate to high humidity with gentle airflow. Avoid cold draughts and direct fans.
• 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: Keep the velvety surface dry and dust with a soft brush. Do not rub, mist or use leaf-shine products.

Troubleshooting Alocasia reginula 'Black Velvet': compact textured leaves and recessed veins

Fine pale dots collect beneath the blade

On a velvety compact leaf, inspect beneath the midrib with side lighting and avoid rubbing the surface while looking for mites or webbing. Inspect the lower velvety surface with bright side-light rather than rubbing it. Repeated pale stippling and fine webbing support mites. Residue remains superficial, while mite damage is fixed in the tissue and repeats across protected areas of the blade. Keep the velvety plant apart, avoid rubbing the surface and apply a treatment labelled for spider mites to the lower blade and concealed crown. The spider-mite guide

The next leaf stops inside its fold

Clear the folded velvety leaf from neighbouring petioles, but do not rub or unfold its soft surface. Do not handle a stalled velvety leaf. Check the corm and lower moisture level, maintain stable warmth and filtered light, and assess the next growth cycle if the crown remains firm. Where the corm and roots are firm, avoid cutting a stalled velvety leaf and judge the plant by its next growth cycle.

Reconstruct the order of events, before changing the position

Note what changed before the symptom appeared on Alocasia reginula 'Black Velvet': pot moisture, temperature, light position or pest evidence. The first visible effect may follow the cause by several days, so the sequence is more useful than the latest care action alone. Buffer a move from heat, cold or stronger light in stages. Abruptly shifting an already stressed plant can add a second pattern of damage.

Alocasia reginula ‘Black Velvet’ is toxic to pets

• Alocasia reginula ‘Black Velvet’ 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.

A name altered from Colocasia and little queen

Alocasia was coined by altering Colocasia, the name of a related aroid genus. The Latin species epithet reginula means “little queen”.