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🥬 Vegetable easy

Growing Green Onion in Stockholm

🇸🇪 Zone 4 Planting Guide · Warm-summer humid continental climate

USDA Zone 4 190 frost-free days 20-30 days to harvest

Quick Answer: Growing Green Onion in Stockholm

Yes, you can grow Green Onion in Stockholm, SE! Plant during Mar, Apr, May, Aug, Sep for best results. Stockholm is in USDA Zone 4 with a Warm-summer humid continental climate, offering 190 frost-free days per year. The difficulty level is easy, and Green Onion takes 20-30 days to harvest. Green Onion needs full sun and regular watering.

Climate Match Analysis

Moderate Match Stockholm + Green Onion

Stockholm's climate requires careful timing. Winter lows (-5°C) drop below Green Onion's minimum (-2°C), so avoid cold months. Follow the recommended planting months for success.

Green Onion tolerates -2°C to 28°C
Optimal: 10°C - 22°C
Stockholm range -5°C to 22°C

Stockholm Climate Data

USDA Zone
4
Frost-Free
190days
Winter Low
-5°C
Summer High
22°C
Rainfall
531mm/yr
Climate
Dfb
Warm-summer humid continental

Green Onion Planting Calendar for Stockholm

Green months show the best time to plant Green Onion in Stockholm

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Plant Green Onion Not recommended

Green Onion Growing Requirements

☀️

Sunlight

Full Sun

6+ hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

20-30

From planting to first harvest

📊

Difficulty

easy

Great for beginners

💡 Growing Tips for Green Onion

Can regrow from store-bought roots in water. Succession plant every 2 weeks. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Frost tolerance: Green Onion is frost tolerant — you can plant earlier in spring.

How to Grow Green Onion in Stockholm

Stockholm, SE is in USDA Hardiness Zone 4 with a Warm-summer humid continental climate (Köppen Dfb). With winter lows of -5°C and summer highs of 22°C, the growing season spans approximately 190 frost-free days. Green Onion is one of the easiest plants to grow in this climate.

Green Onion thrives in temperatures between 10°C and 22°C, requiring full sun and regular watering. In Stockholm, the best months to plant Green Onion are March, April, May, August, September. Since Green Onion can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 20-30 days after planting.

With 531mm of annual rainfall, Stockholm provides moderate natural moisture. You'll likely need to supplement with regular watering, especially during the growing season.

Other Plants That Grow in Stockholm

More plants you can grow alongside Green Onion in Stockholm

Keep Exploring

Frequently Asked Questions

Can I grow green onion in Stockholm?

Yes! Green Onion can be successfully grown in Stockholm, SE. Stockholm is in USDA Hardiness Zone 4 with a Warm-summer humid continental climate. The difficulty level for growing Green Onion here is rated "easy". The best months to plant are March, April, May, August, September.

When should I plant green onion in Stockholm?

In Stockholm, the recommended planting months for Green Onion are March, April, May, August, September. Stockholm has 190 frost-free days per year, with winter lows of -5°C and summer highs of 22°C. Green Onion is frost tolerant, giving you more flexibility with planting dates.

How long does green onion take to grow in Stockholm?

Green Onion typically takes 20-30 days from planting to harvest. In Stockholm's Warm-summer humid continental climate with 190 frost-free days, you have enough time with good planning to grow Green Onion to maturity. Can regrow from store-bought roots in water. Succession plant every 2 weeks. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Aim for about 2.5 cm of water per week, adjusting for rainfall. Organic mulch around the base helps maintain even moisture.

Can I grow green onion indoors in Stockholm?

Green Onion can potentially be grown indoors in Stockholm with proper conditions. It requires full sun (6+ hours of direct light — a south-facing window or grow lights recommended). Indoor growing extends your season beyond the Mar, Apr, May, Aug, Sep outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant green onion in Stockholm?

Plant Green Onion in Stockholm during March, April, May, August, September. These are the optimal months based on Stockholm's USDA Zone 4 climate, 190 frost-free days, and temperature range of -5°C to 22°C.

Is green onion hard to grow in Stockholm?

Green Onion is rated "easy" to grow in Stockholm. This is a great choice for beginners — it is forgiving and adapts well to this climate. The climate match for Green Onion in Stockholm is Moderate.

What grows well with green onion in Stockholm?

In Stockholm, you can grow many companion plants alongside Green Onion. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Stockholm's Zone 4 climate.

Does green onion need full sun in Stockholm?

Green Onion requires full sun. In Stockholm, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.

Last updated: March 2026 · Climate data from NOAA, FAO, USDA

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