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Colocasia Diamond Head

Colocasia 'Diamond Head'

Colocasia esculenta 'Diamond Head' 19,939

Item # 49400

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Plant Patent #19,939

Boasting a sheen highly unusual for Colocasia cultivars, these brilliant heart-shaped violet to black leaves are elegantly rippled and beautifully held up and out for maximum showiness. 'Diamond Head' is an exciting breeding breakthrough in Elephant Ears, with a new texture and distinctive dark coloration that holds even in the hottest weather.

Reaching up to 2½ feet long, each leaf of this quick-growing Elephant Ear is distinctive and bold. The petioles (stems) of the foliage are showy, too, in deep shades of burgundy that blend well with the leaves. 'Diamond Head' reaches 4 feet high and spreads 2 to 3 feet wide in part shade, making it a bold choice for the north side of the house, a shaded foundation planting, and the border.

'Diamond Head' was introduced in 2008 by breeder John Cho of Hawaii. It is a descendant of C. 'Putih' x C. 'Black Magic,' but it outdoes both parents in color and texture. Most amazing is the glossy sheen of the foliage, a texture typically found in Alocasia but not Colocasia cultivars.

Dramatically veined and lightly ruffled along the edges, the leaves on this plant are nothing short of magnificent. Find a consistently moist place in up to three-quarters shade and let 'Diamond Head' regale you from spring until frost! And if you would like to grow it north of its zone 7 hardiness limit, find a large container and bring it to a frost-free location to overwinter. Easy and very impressive in a wide range of settings. Zones 7-10.



Plant in a 5- to 6-inch pot to allow the roots to continue to develop and place in a sunny window for about a month. Water once every 5 to 7 days to keep the soil damp but not overly wet. Young plants that are not well rooted can be easily over watered, which can cause root rot and death.

After about a month, transplant into a larger container (10 to 15 inches in diameter) and place in full sun or plant into the garden, 3 to 6 feet apart in a moist to boggy soil that contains plenty of organic matter. Water every 3 to 4 days to keep the soil damp. Larger plants (especially those in pots) may need to be watered daily in hot areas.


In the colder half of zone 7, small plants are best moved indoors for the first winter; larger plants should be mulched heavily with pine needles, salt marsh hay, or shredded leaves.

In areas north of zone 7 where it is not hardy, move indoors to a bright room in the fall and grow as a houseplant. If space is not available, it can also be cut back close to the soil line and stored as a dormant plant in a cool, dark basement. Check the soil every 4 to 5 weeks to keep it barely damp.


Zones 7-10

Tips for gardening in particularly hot, dry climates:

1. Water with a drip system whenever possible – soak the bed slowly and thoroughly to a depth of 10" to 12".

2. Watering deeply every 3 to 5 days is preferable to a shallow daily watering.

3. Water in the early morning, so foliage has time to dry.

4. Add a 2- to 3-inch layer of mulch or similar material to aid in water retention and help keep the roots cool during hot weather.