Colocasia esculenta ‘Pharaoh’s Mask’

A sculptural taro from a tropical wetland lineage

‘Pharaoh’s Mask’ is a cultivated Colocasia esculenta selected for dark raised veins and a strongly folded leaf surface. Its dramatic relief is horticultural, built on taro's peltate leaves and underground corm.

Taro's prehistoric cultivation obscures a single wild point of origin, although its ancestry is centred in tropical Asia and it has an ancient history in New Guinea and the Pacific. Natural and long-established plants occur in marshy ground, beside streams and across humid lowlands, where warmth and abundant seasonal water sustain the large leaf canopy.

Colocasia esculenta ‘Pharaoh’s Mask’ plant care

Light

Keep Colocasia esculenta ‘Pharaoh’s Mask’ in the brightest position the home can provide, ideally beside a south or west window with gradual direct-sun acclimation. Plenty of light supports firm leaf stalks and the cultivar's raised, folded leaf structure. Low light produces flatter, smaller leaves on leaning stalks, while hot unacclimated sun can scorch the high ridges first. Light influences growth quality but does not manufacture the sculpted form.

Watering

Maintain steady moisture around Colocasia esculenta ‘Pharaoh’s Mask’. Water when the surface has only just begun to dry, wetting every part of the pot and refreshing any shallow reservoir rather than topping up old water. The thick basal organ and coarse roots support rapid growth but the broad leaves lose water quickly. A serious dry-out collapses the sculpted foliage; constantly stagnant mix can damage the base. Strong light and warmth speed use, while cool dim conditions slow it.

Substrate and roots

Choose a rich but springy mix for Colocasia esculenta ‘Pharaoh’s Mask’, combining quality houseplant substrate, fine bark and pumice or perlite. It must hold enough moisture for the large leaf while allowing air around the thick roots and basal corm. Dense peat, muddy soil and a very coarse mix are unsuitable. Keep the growing point at the same height, leave the drainage hole open and rinse soluble salts before they collect in a frequently watered pot.

Temperature

Keep Colocasia esculenta ‘Pharaoh’s Mask’ at about 21–30 °C and above roughly 16 °C. A temperature drop can slow water use long before the large leaf wilts, so reduce any standing reservoir in cool conditions. Protect the folded leaf ridges from cold glass, air-conditioning and winter draughts. Direct heating dries the raised edges and may twist a developing leaf. Stable warmth is most important after repotting or division.

Humidity and airflow

Aim for humidity near 55–75% around Colocasia esculenta ‘Pharaoh’s Mask’. Ordinary household levels may be adequate, but the raised folded edges dry first when heated air is very dry. Higher humidity must be paired with airflow through the crown so water does not remain in the folds or leaf bases. A humidifier is preferable to misting, which gives only a brief change and wets the sculpted surface.

Fertilising

Give Colocasia esculenta ‘Pharaoh’s Mask’ regular dilute nutrition during active growth, using a complete foliage fertiliser at one-quarter to one-half strength every three to four weeks. Large sculpted leaves require resources, but stronger feeding cannot improve their shape when light or warmth is inadequate. Match winter feeding to actual leaf and root activity. Rinse the moist root ball periodically because salts accumulate quickly under frequent watering.

Repotting

Move Colocasia esculenta ‘Pharaoh’s Mask’ to fresh substrate once coarse roots pack the base, the growing point rises or the pot cannot support the large leaf. Add 4–6 cm of width with a heavy stable container. The roots handle careful disturbance during active warm growth, but do not cut the basal corm simply to fit a pot. Preserve healthy roots, divide only clearly separate rooted offsets and replant the crown at exactly the same height.

Support, pruning, handling and leaf care

Give each sculpted leaf generous clearance because pressure on the raised veins and folded tissue leaves permanent creases. Use a heavy pot instead of staking the individual sculpted leaves of Colocasia esculenta ‘Pharaoh’s Mask’. Keep the plant stationary while a folded leaf opens, then rotate gradually; when an old leaf has completely declined, cut its stalk near the crown without tugging the basal sheath. A low-pressure shower is safer than wiping across the ridges; tip the leaf gently so water drains from its folds and let it dry in moving air.

Colocasia ‘Pharaoh’s Mask’ leaf and corm problems

The centre rises and the leaf edges fold backwards

This three-dimensional shape is the signature of a mature ‘Pharaoh’s Mask’ leaf: the raised dark veins push the centre forward while the margins recurve. Do not flatten, tie or diagnose it as curling. Trouble is indicated by limp texture, fresh tearing or a collapsing petiole.

Young leaves remain flat with less prominent dark veins

The sculpted mask develops as leaves expand and harden, so a fresh blade may initially be flatter. If several mature leaves remain small and weak, review warmth, strong light and root activity. Avoid extra fertiliser when the corm is cool or dormant.

The raised veins crack or abrade

The projecting structure can rub against glass, walls or neighbouring leaves. A dry fixed scar is mechanical; reposition the plant and allow more clearance. A wet or enlarging break should be removed before decay tracks down the petiole.

The leaf surface becomes finely pale outside the veins

Stippling that crosses the normal green and purple-black structure suggests spider mites. Inspect beneath the recurved margins for moving specks and webbing, isolate the plant and repeat a labelled mite treatment before the distorted folds shelter a large colony.

The petiole bases loosen from a soft centre

This is urgent crown or corm rot. Lift the plant, remove saturated material and cut away all soft tissue with a sterile blade. Retain only a firm corm or offset with an intact bud; a destroyed central growing point cannot rebuild the same crown.

Pet Safety

Colocasia esculenta ‘Pharaoh’s Mask’ contains irritating insoluble calcium oxalate crystals throughout the raw plant. Chewing can cause immediate burning and swelling of the lips, mouth and tongue, excessive drooling, vomiting and difficulty swallowing. Prevent access and contact a veterinarian or doctor if significant symptoms develop.

The patented hybrid sold as Pharaoh’s Mask

Brian Paul Williams selected this hybrid in 2018 from a cross between ‘Dark Star’ and an unnamed Colocasia fontanesii parent made five years earlier.

The United States reissue patent gives ‘COPHAMA’ as the cultivar name, while Pharaoh’s Mask is the commercial name. Its parentage makes it a Colocasia hybrid rather than a cultivar of Colocasia esculenta.