Colocasia esculenta (Taro, Kalo, Elephant’s Ear)Colocasia esculenta (Taro, Kalo, Elephant’s Ear)

Grown for their spectacular, heart-shaped leaves, C. esculenta is a primary food source in Pacific island regions. These herbaceous perennials grow from tubers (sometimes fleshy, easily sliced rhizomes) and are sometimes stored in winter by entering a state of dormancy.

Colocasia esculenta (Taro, Kalo, Elephant’s Ear)
Family: Araceae
Subspecies: ‘Illustris’, ‘Antiquorum’, ‘Black Magic’, ‘Black Beauty’, ‘Coal Miner’, ‘Nancy’s Revenge’, ‘Elepaio’, ‘Pink China’, ‘Black Coral’, ‘Mojito’, and many more
Native: Phillipines, Pacific Islands
Hardiness Zones: 8-10 (‘Pink China’ to zone 6)
Height: to 1m (sun), rarely to 2m (typically shade)
Diameter: typically to 1m per tuber or fleshy rhizome base (discounting offshoots)
Root System: thick light brown tubers or dark, almost shiny, fleshy, quickly spreading rhizomes, roots fibrous and pink when new (white older), spreads aggresively quick and tolerant of flooding
Growth Rate: moderate to very quick
Age: perennial
Deciduous: usually no, dormancy can be induced
Monoecious/dioecious: monoecious
Monocot/dicot: monocot

Tolerates:  wet soil, excessive rain fall, dividing, poor drainage (may grow in shallow standing water)
Problems (major):  Calcium oxalate crystals
Problems (minor):  red spider mites (low humidity), grows poorly indoors
Poisonous:  Needle-like calcium oxalate crystals can cause mouth and throat irritation if ingested.

Soil requirements:  prefer consistently moist/wet, nutrient-rich,humus rich soils (a pH of 5.5-7.0 optimally)
Air Requirements:  grow poorly at high elevations
Watering requirement:  moderate to high, drying out may quickly lead to death or dormancy
Sun requirement:  full sun preferred, larger in part shade but with less “runners” and flowers

Leaves:  heart/arrow-shaped, to 60cm by 30cm, light green but varying widely with variety
Stem: subterranean tuber, cylindrical or globular
Flowering structure:  spadix yellowish-white, to 10cm tall, entirely closed in thin, bright yellow spathe to 20cm tall, sitting atop light green peduncle to 20cm
Flowering frequency: May-September under full sun and sufficiently watered conditions, some varieties flower copiously (others hardly ever), almost never indoors

Notable characteristics:
Tubers or rhizomes proliferate exist under good conditions.

In many Pacific Island areas and in the East, C. esculenta are frequently grown as food. Leaves are often consumed after cooking, and the roots are used in curries. The plant contains large quantities of fiber and quite a bit of potassium, along with Vitamin A, Vitamin C, and some protein found in the leaves. Additionally, the plant contains Vitamin B, Vitamin C, Vitamin E, Calcium, Manganese, Magnesium, and Copper. Many health stores offer taro, as its health benefits can attract dieters. This crop is extremely valuable to Hawaiians, who have been growing the plant in cultivation for centuries. Taro may be helpful for various medicinal purposes, although there is not enough research to warrant such use.

Sources used:

Colocasia_subspecies_01 Colocasia_subspecies_1 Colocasia_subspecies_2
Three small cultivated varities


Emerging stem and leaf from parent tuber (to the left)

‘Black Magic’ or ‘Coal Miner’ in standing water

‘Illustris’ inflorescence

‘Illustris’ foliage

These images were taken by me, and they may be used for educational/informational purposes only provided that this online journal/article is appropriately cited/referenced first.



Filed under Plant Analysis

2 responses to “Colocasia esculenta (Taro, Kalo, Elephant’s Ear)Colocasia esculenta (Taro, Kalo, Elephant’s Ear)

  1. Pingback: Asarum Europeaum, European Ginger | Find Me A Cure

  2. Carl Sagan (Lucas)

    Looks delicious 10/10 would grow

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s