InBonsai

Culinary Herbs

VIETNAMESE CORIANDER

(Polygonum odoratum)

Vietnamese coriander (Rau Ram) is a very common spice in daily life. Its leaves have a pleasant aroma, essential in dishes like shredded chicken salad, clam porridge, and balut.

Conditions

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Temperate Warm Climate
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Moist High Water Needs
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Loam Light/Medium Soil

Preparation

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Cuttings Stem Propag.
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Wet Soil Rice-paddy like
Spacing: 10-12cm x 7-10cm

Water Needs

Max
Prefers wet environment
Vietnamese Coriander

Rau Ram

Polygonum odoratum

High
Economic Efficiency
35-40
Days to Harvest
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1. Characteristics

Herbaceous, reddish-purple stems, creeping. Fascicled roots. Leaves green above, purplish below.

Moisture: 90%
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2. Uses

Spice/Herb (soups, salads...) and Medicinal (indigestion, sunstroke).

Popularity: 95%
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3. Technique

Year-round (best in Spring-Summer). Wet/Mud soil. Healthy stem cuttings.

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Watering
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Weeding
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Spacing

favorite I. Uses & Benefits

Vietnamese coriander is a common spice. Stems and leaves have a pleasant aroma, used in shredded chicken salad, clam porridge, balut, and bun thang...

"High economic efficiency, profitable crop."

Medicinal Value: Used to treat indigestion, sunstroke, scabies, and impetigo.

spa II. Biological Characteristics

  • Stems & Roots: Herbaceous, reddish-purple creeping stems, 25-30cm high. Fascicled roots grow from nodes.
  • Leaves: Green on top, reddish-purple underneath, alternate arrangement, very short petioles.
  • Climate: Prefers warm, temperate climate. Intolerant to extreme heat or cold.
  • Environment: Loves moist environments; grows well in light loam and medium loam soils.

agriculture III. Cultivation Techniques

1. Season & Soil

  • Season: Year-round in temperate climates. Best in Spring-Summer (Jan-Feb) or late Feb to mid-Mar. Late planting reduces yield.
  • Soil: Well-ploughed, weed-free. Can be grown in wet soil (like rice paddies) or mud. Beds 1.1-1.5m wide.

2. Fertilizers

Fertilizer per 1,000m²:

  • check_circle Organic: 1.0 - 1.5 tons (Decomposed)
  • check_circle NPK: 30 - 40 kg
  • check_circle Superphosphate: 25 - 30 kg
  • check_circle Potash: 15 - 20 kg (or 100-150kg wood ash)

* Basal application: All organic, superphosphate, and 1/3 potash mixed into soil before planting.

3. Planting & Care

  • Planting: Propagated by stem. Choose healthy cuttings, 14-15cm long.
    - Spacing: 10-12cm x 7-10cm. 2-3 shoots per hole.
    - Bury 1/3 of the cutting (2-3 nodes) in soil.
  • Care:
    - Watering: Keep moist. Can use flood irrigation.
    - Top dressing: Apply NPK (7-10kg) when new leaves appear. Rinse leaves after applying fertilizer.
    - Add Potash mid-season during strong growth.
  • Pests: Few pests. Use biological or herbal measures if necessary.

inventory_2 IV. Harvest & Propagation

  • Harvest: 35-40 days after planting or when canopy closes.
    - Method: Select plants or cut across the field leaving 5-6cm base.
  • Propagation: Crop rotation recommended. Collect poor-growing plants and replant in a fixed area for seedlings (Summer-Autumn).
Fertilizers (per 1,000m²)
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1-1.5 Tons Organic
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30-40 kg NPK
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25-30 kg Superphosphate
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15-20 kg Potash

Growth Process

Planting

Spring-Summer - Stem cuttings.

Care

Keep wet, fertilize.

First Harvest

35-40 days.

Subsequent Harvests

Cut leaving 5-6cm.