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Growing Cacao in Reykjavik

🇮🇸 Zone 5 Planting Guide · Subpolar oceanic climate

USDA Zone 5 130 frost-free days 1095-1825 days to harvest

Quick Answer: Growing Cacao in Reykjavik

Yes, you can grow Cacao in Reykjavik, IS! Plant during May, Jun, 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 hard, and Cacao takes 1095-1825 days to harvest. Cacao needs partial shade ok and frequent watering.

Climate Match Analysis

Moderate Match Reykjavik + Cacao

Reykjavik's climate requires careful timing. Winter lows (-3°C) drop below Cacao's minimum (18°C), so avoid cold months. Follow the recommended planting months for success.

Cacao tolerates 18°C to 35°C
Optimal: 24°C - 30°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

Cacao Planting Calendar for Reykjavik

Green months show the best time to plant Cacao in Reykjavik

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

Cacao Growing Requirements

☀️

Sunlight

Partial Shade OK

2-4 hours direct sunlight

💧

Water

Frequent

Keep soil consistently moist

📅

Days to Harvest

1095-1825

From planting to first harvest

📊

Difficulty

hard

For experienced growers

💡 Growing Tips for Cacao

Needs constant warmth, humidity, and shade. Only viable in true tropical climates. Wait until soil warms to at least 24°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Consistent moisture is critical. Mulch with straw or compost to retain soil moisture and keep roots cool during hot weather.

Frost tolerance: Cacao is NOT frost tolerant — wait until after the last frost in Reykjavik.

How to Grow Cacao 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. Cacao requires more experience to grow successfully in this climate.

Cacao thrives in temperatures between 24°C and 30°C, requiring partial shade ok and frequent watering. In Reykjavik, the best months to plant Cacao are May, June, July, August. Cacao is not frost tolerant, so it's important to wait until after the last spring frost before transplanting outdoors. Expect to harvest in approximately 1095-1825 days after planting.

With 799mm of annual rainfall, Reykjavik provides moderate natural moisture. This should be adequate for Cacao's water needs.

Other Plants That Grow in Reykjavik

More plants you can grow alongside Cacao in Reykjavik

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Frequently Asked Questions

Can I grow cacao in Reykjavik?

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

When should I plant cacao in Reykjavik?

In Reykjavik, the recommended planting months for Cacao are May, June, July, August. Reykjavik has 130 frost-free days per year, with winter lows of -3°C and summer highs of 13°C. Since Cacao is not frost tolerant, make sure to plant after the last frost date.

How long does cacao take to grow in Reykjavik?

Cacao typically takes 1095-1825 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 Cacao to maturity. Needs constant warmth, humidity, and shade. Only viable in true tropical climates. Wait until soil warms to at least 24°C before transplanting outdoors — cold soil stunts growth and can invite root rot. Consistent moisture is critical. Mulch with straw or compost to retain soil moisture and keep roots cool during hot weather.

Can I grow cacao indoors in Reykjavik?

Cacao can potentially be grown indoors in Reykjavik with proper conditions. It requires partial shade ok (2-4 hours of indirect light). Indoor growing extends your season beyond the May, Jun, Jul, Aug outdoor planting window. Use containers with good drainage and frequent watering.

What month do I plant cacao in Reykjavik?

Plant Cacao in Reykjavik during May, June, 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 cacao hard to grow in Reykjavik?

Cacao is rated "hard" to grow in Reykjavik. This is challenging in this climate. Experienced growers will have the best success with careful attention to temperature and moisture. The climate match for Cacao in Reykjavik is Moderate.

What grows well with cacao in Reykjavik?

In Reykjavik, you can grow many companion plants alongside Cacao. 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 cacao need full sun in Reykjavik?

Cacao requires partial shade ok. Cacao 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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