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Wasabi imported image

Crop details

Wasabi

Eutrema japonicum
Family: Brassicaceae

Quick stats

Family Brassicaceae
Typical harvest 6.0 t/ha
Varieties 1
Pests & diseases 2
Seasons 1

Crop profile

Growth habit annual
Days to harvest 240
Main uses Rhizome and leaves for specialty condiment markets.
Pollination insect
Origin / where it grows Only suitable for cool shaded high-value specialty production.

Weather, soil & spacing

Best temperature 8–18 °C
Rainfall 450–800 mm/yr
Altitude 800–2800 m
Best pH 6–7
Soil type Cool, organic-rich, constantly moist but well-aerated soils or recirculating systems.
Row spacing 35 cm
Plant spacing 20 cm
Planting depth 1.5 cm
Seed rate 3 kg/ha
Nursery days

Simple notes for farmers

About the crop: This crop is annual. You plant, grow and harvest it in one main season, then plant again. You can normally start harvesting about 240 days after planting, depending on care and variety.

Main use: Farmers mostly grow this crop for rhizome and leaves for specialty condiment markets..

Pollination: This crop is mainly pollinated by insect. Keeping flowers healthy and having insects like bees in the field helps improve fruit set and yields.

Where it grows: Only suitable for cool shaded high-value specialty production. It is grouped under: Vegetables, Spices & Condiments.

Best climate: This crop does well in warm areas where the temperature is usually between 8 and 18 degrees Celsius. It prefers places that receive around 450 to 800 millimetres of rain in a year. It can grow from near sea level up to about 2800 metres above sea level.

Soil: The crop grows best in slightly acidic to near neutral soils, with a pH of about 6 to 7. It does well in cool, organic-rich, constantly moist but well-aerated soils or recirculating systems.. Good drainage is important, so avoid waterlogged spots.

Plant spacing: Plant in rows about 35 centimetres apart, and leave about 20 centimetres between plants in the row. This gives each plant enough space for roots and canopy to spread.

Planting depth: Dig planting holes or furrows about 1.5 centimetres deep so the roots sit firmly in the soil but are not buried too deep.

Seed or planting material: Use around 3 kilograms of seed or planting material per hectare. Spread or plant evenly so the field has a good stand without being overcrowded.

Farmer guide (mwongozo wa mkulima)

Planting: Establish Wasabi in a fine weed-free seedbed and keep emergence moisture steady.
Transplanting: Direct seed or transplant depending on production system.
Irrigation: Maintain even soil moisture for steady Wasabi growth and quality.
Fertigation: Use split nitrogen and potassium for market-quality Wasabi.
Pest scouting: Scout Wasabi weekly for chewing pests, sap suckers, and foliar diseases.
Pruning: No pruning required unless sanitation or staking is needed.
Harvest: Harvest Wasabi in the cool hours and handle gently to preserve aroma.
Postharvest: Cool and shade Wasabi promptly after harvest.

Nutrient schedule (mbolea kwa hatua)

# Stage DAP Product Rate Targets (kg/ha) Notes
1 Basal 0 NPK 17-17-17 200 kg/ha N: 34, P₂O₅: 34, K₂O: 34 Basal fertilizer for Wasabi.
2 Topdress 21 CAN 100 kg/ha N: 26, P₂O₅: —, K₂O: — Support active Wasabi vegetative growth.

Nutrient requirements

Nutrient Stage Amount Unit
N Basal 35 kg/ha
P₂O₅ Basal 30 kg/ha
K₂O Basal 35 kg/ha
N Topdress 25 kg/ha
K₂O Topdress 20 kg/ha

Field images (picha shambani)

Wasabi imported image
Wasabi imported image
Primary
Wasabi imported image
Wasabi imported image
Wasabi imported image
Wasabi imported image
Name Country Maturity Traits
Mazuma KE 240 Specialty rhizome type for cool shaded production.
Stage Product Rate (kg/ha) Notes
Planting Well-rotted manure 5000 Improve soil structure before Wasabi planting.
Vegetative growth CAN 100 Split topdress for Wasabi production.
Name Type Symptoms Management
Aphids pest Crowding on tender shoots and reduced growth. Use clean fields and selective control if needed.
Powdery mildew disease White powdery growth on leaves. Improve airflow and avoid overcrowding.
System Typical Min Max Notes
Managed fresh-market production 6 4.2 9 Typical marketable Wasabi yield under irrigated or well-managed conditions.
Country Region Planting Harvest
KE Highland Vegetable Zones Mar-Apr or Oct-Nov Year-round depending on irrigation
Country Region Suitability
KE Highland Vegetable Zones High