Colocasia gaoligongensis

RHS Plant Profile

Gaoligong taro

Herbaceous Perennial

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A deciduous, tuberous perennial producing bright green, heart- to arrow-shaped leaves up to 60cm long held on upright stalks; each leaf has a dark central spot and may show interveinal dark green to purplish markings

Position

Full sun, Partial shade

Soil Types

Chalk, Loam

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.5-1 metres
Max Height: 0.5-1 metres

Growing Conditions

Chalk Loam

Moisture: Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: East–facing or North–facing or South–facing or West–facing
Exposure: Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H4

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Araceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
Potentially harmful: Humans/Pets: Harmful if eatenskin/eye irritant. Wear gloves and other protective equipment when handling For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus: Colocasia can be deciduous or evergreen, tuberous-rooted perennials with arrow-shaped or rounded leaves, often prominently veined; flowers are minute, on a spadix held within a small white spathe, but are seldom produced in cultivation
Name Status: Correct
Plant Range: China (Yunnan)

How to Grow

Cultivation

Under glass, pot up tubers in peat-free potting compost. Keep in bright, filtered light and high humidity. Water freely and apply a balanced liquid fertiliser monthly when in growth. Keep just moist in winter. Keep tubers dry and frost-free when dormant. Requires 21 degrees minimum to stay evergreen

Propagation

Propagate by division of rhizomes

Suggested planting locations and garden types

Patio and container plants
Sub-tropical
Conservatory and greenhouse
Flower borders and beds

Pruning

No pruning required

Pests

May be susceptible to glasshouse red spider mite, aphids and glasshouse whitefly

Diseases

Generally disease-free