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Herbs

spring onion

Allium fistulosum

Spring onion, also known as scallions or green onions, is a biennial plant cultivated as an annual for its edible green leaves and immature bulbs. It has a mild flavor and is commonly used in salads, soups, and as a garnish. The plant is characterized by its long green stalks and small white bulbs.

Calculate System for spring onion
400.00–600.00mm
Water Need
120 days
Season
30.00–60.00cm
Root Depth
25,000 kg/ha
Yield
333,333
Plants/ha

Growth Stages

Season: Mar – Aug (120 days)

Initial
Kc 0.400
30 days
Development
Kc 0.700
40 days
Mid-Season
Kc 1.000
60 days
Late
Kc 0.800
30 days

Spring onions can be grown from seeds, sets, or transplants. They are often harvested young for their tender greens and mild flavor. Varieties include white, yellow, and red spring onions, each with unique flavor profiles.

Water Requirements

Season Total: 400.00600.00 mm
Water Stress Sensitivity: High
Salt Tolerance: Moderate
Water Productivity: 15.500 kg/m³

Recommended Methods

Drip Irrigation90.00%Fixed Sprinkler70.00%

Soil Compatibility

Optimal pH range: 6.0 – 7.5

Sandy Loam
AWC100.00mm/m
Drainagegood
Drainage: Well-drained soils preferred
Organic Matter: 2.00%
Soil should be rich in organic matter. Incorporating compost can improve soil structure and nutrient availability.

Climate Compatibility

Temperature range: 15.0°C – 30.0°C

Temperate Continental
ETo: 1.006.00 mm/day
Temp: -20.0°C – 30.0°C
Frost: high
Mediterranean
ETo: 3.007.00 mm/day
Temp: 5.0°C – 35.0°C
Frost: low
Frost Tolerance: Low frost tolerance
Heat Tolerance: Moderate heat tolerance
Spring onions prefer mild temperatures. In hotter climates, provide partial shade to prevent bolting.

Planting Layout

30.00cm
Row Spacing
10.00cm
Plant Spacing
333,333
Plants per ha

Nutrient Requirements (kg/ha)

Nitrogen (N)150 kg/ha
Phosphorus (P)60 kg/ha
Potassium (K)180 kg/ha
40
Calcium (Ca) kg/ha
25
Magnesium (Mg) kg/ha
20
Sulfur (S) kg/ha
Schedule: Apply nitrogen in 3 splits during growing season, with phosphorus and potassium at planting.
Organic Matter: 2-3% organic matter recommended

Yield Information

25,000
kg/ha
0.100
kg/plant
0.450
Harvest Index
Quality Factors: Size, color, flavor intensity

Design Your spring onion Irrigation System

Use our free calculators to plan water requirements, spacing, and system costs for your spring onion field.

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Related Guides

spring onion: A Guide to Growing and Irrigating Economically

Introduction Spring onion, also known as scallion or green onion, is a versatile and popular crop that is widely used in various cuisines around the world. Not only does it add flavor to dishes, but it also offers numerous health benefits. Growing spring onion can be a rewarding experience, both economically and in…

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