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🥬 Vegetable medium

Growing Mustard Greens in Reykjavik

🇮🇸 Zone 5 Planting Guide · Subpolar oceanic climate

USDA Zone 5 130 frost-free days 30-45 days to harvest

Quick Answer: Growing Mustard Greens in Reykjavik

Yes, you can grow Mustard Greens in Reykjavik, IS! Plant during Mar, Apr, May, Jul, Aug for best results. Reykjavik is in USDA Zone 5 with a Subpolar oceanic climate, offering 130 frost-free days per year. The difficulty level is medium, and Mustard Greens takes 30-45 days to harvest. Mustard Greens needs full sun to partial shade and regular watering.

Climate Match Analysis

Moderate Match Reykjavik + Mustard Greens

Reykjavik's climate requires careful timing. Winter lows (-3°C) drop below Mustard Greens's minimum (0°C), so avoid cold months. Follow the recommended planting months for success.

Mustard Greens tolerates 0°C to 26°C
Optimal: 10°C - 20°C
Reykjavik range -3°C to 13°C

Reykjavik Climate Data

USDA Zone
5
Frost-Free
130days
Winter Low
-3°C
Summer High
13°C
Rainfall
799mm/yr
Climate
Cfc
Subpolar oceanic

Mustard Greens Planting Calendar for Reykjavik

Green months show the best time to plant Mustard Greens in Reykjavik

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Plant Mustard Greens Not recommended

Mustard Greens Growing Requirements

☀️

Sunlight

Full Sun to Partial Shade

2-4 hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

30-45

From planting to first harvest

📊

Difficulty

medium

Some experience helpful

💡 Growing Tips for Mustard Greens

Harvest young leaves for salads, mature leaves for cooking. Bolts in heat. 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: Mustard Greens is frost tolerant — you can plant earlier in spring.

How to Grow Mustard Greens in Reykjavik

Reykjavik, IS is in USDA Hardiness Zone 5 with a Subpolar oceanic climate (Köppen Cfc). With winter lows of -3°C and summer highs of 13°C, the growing season spans approximately 130 frost-free days. Mustard Greens grows well with some gardening knowledge in this climate.

Mustard Greens thrives in temperatures between 10°C and 20°C, requiring full sun to partial shade and regular watering. In Reykjavik, the best months to plant Mustard Greens are March, April, May, July, August. Since Mustard Greens can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 30-45 days after planting.

With 799mm of annual rainfall, Reykjavik provides moderate natural moisture. You'll likely need to supplement with regular watering, especially during the growing season.

Other Plants That Grow in Reykjavik

More plants you can grow alongside Mustard Greens in Reykjavik

Keep Exploring

Frequently Asked Questions

Can I grow mustard greens in Reykjavik?

Yes! Mustard Greens can be successfully grown in Reykjavik, IS. Reykjavik is in USDA Hardiness Zone 5 with a Subpolar oceanic climate. The difficulty level for growing Mustard Greens here is rated "medium". The best months to plant are March, April, May, July, August.

When should I plant mustard greens in Reykjavik?

In Reykjavik, the recommended planting months for Mustard Greens are March, April, May, July, August. Reykjavik has 130 frost-free days per year, with winter lows of -3°C and summer highs of 13°C. Mustard Greens is frost tolerant, giving you more flexibility with planting dates.

How long does mustard greens take to grow in Reykjavik?

Mustard Greens typically takes 30-45 days from planting to harvest. In Reykjavik's Subpolar oceanic climate with 130 frost-free days, you have enough time with good planning to grow Mustard Greens to maturity. Harvest young leaves for salads, mature leaves for cooking. Bolts in heat. 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 mustard greens indoors in Reykjavik?

Mustard Greens can potentially be grown indoors in Reykjavik with proper conditions. It requires full sun to partial shade (2-4 hours of indirect light). Indoor growing extends your season beyond the Mar, Apr, May, Jul, Aug outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant mustard greens in Reykjavik?

Plant Mustard Greens in Reykjavik during March, April, May, July, August. These are the optimal months based on Reykjavik's USDA Zone 5 climate, 130 frost-free days, and temperature range of -3°C to 13°C.

Is mustard greens hard to grow in Reykjavik?

Mustard Greens is rated "medium" to grow in Reykjavik. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Mustard Greens in Reykjavik is Moderate.

What grows well with mustard greens in Reykjavik?

In Reykjavik, you can grow many companion plants alongside Mustard Greens. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Reykjavik's Zone 5 climate.

Does mustard greens need full sun in Reykjavik?

Mustard Greens requires full sun to partial shade. Mustard Greens tolerates lower light. In Reykjavik, a spot with filtered or indirect light for 2-4 hours works well.

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

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