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🥬 Vegetable medium

Growing Horseradish in Lisbon

🇵🇹 Zone 9 Planting Guide · Hot-summer Mediterranean climate

USDA Zone 9 350 frost-free days 140-160 days to harvest

Quick Answer: Growing Horseradish in Lisbon

Yes, you can grow Horseradish in Lisbon, PT! Plant during Oct, Nov for best results. Lisbon is in USDA Zone 9 with a Hot-summer Mediterranean climate, offering 350 frost-free days per year. The difficulty level is medium, and Horseradish takes 140-160 days to harvest. Horseradish needs full sun to partial shade and regular watering.

Climate Match Analysis

Good Match Lisbon + Horseradish

Lisbon's temperatures (8°C to 28°C) are within the tolerable range for Horseradish (-20°C to 30°C), though not always in the optimal zone (10°C to 22°C). Plant during recommended months for best results.

Horseradish tolerates -20°C to 30°C
Optimal: 10°C - 22°C
Lisbon range 8°C to 28°C

Lisbon Climate Data

USDA Zone
9
Frost-Free
350days
Winter Low
8°C
Summer High
28°C
Rainfall
774mm/yr
Climate
Csa
Hot-summer Mediterranean

Horseradish Planting Calendar for Lisbon

Green months show the best time to plant Horseradish in Lisbon

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

Horseradish Growing Requirements

☀️

Sunlight

Full Sun to Partial Shade

2-4 hours direct sunlight

💧

Water

Regular

Consistent moisture, 1-2 inches/week

📅

Days to Harvest

140-160

From planting to first harvest

📊

Difficulty

medium

Some experience helpful

💡 Growing Tips for Horseradish

Plant root cuttings at 45-degree angle. Contain in bottomless bucket. 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: Horseradish is frost tolerant — you can plant earlier in spring.

How to Grow Horseradish in Lisbon

Lisbon, PT is in USDA Hardiness Zone 9 with a Hot-summer Mediterranean climate (Köppen Csa). With winter lows of 8°C and summer highs of 28°C, the growing season spans approximately 350 frost-free days. Horseradish grows well with some gardening knowledge in this climate.

Horseradish thrives in temperatures between 10°C and 22°C, requiring full sun to partial shade and regular watering. In Lisbon, the best months to plant Horseradish are October, November. Since Horseradish can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 140-160 days after planting.

With 774mm of annual rainfall, Lisbon provides moderate natural moisture. You'll likely need to supplement with regular watering, especially during the growing season.

Other Plants That Grow in Lisbon

More plants you can grow alongside Horseradish in Lisbon

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Frequently Asked Questions

Can I grow horseradish in Lisbon?

Yes! Horseradish can be successfully grown in Lisbon, PT. Lisbon is in USDA Hardiness Zone 9 with a Hot-summer Mediterranean climate. The difficulty level for growing Horseradish here is rated "medium". The best months to plant are October, November.

When should I plant horseradish in Lisbon?

In Lisbon, the recommended planting months for Horseradish are October, November. Lisbon has 350 frost-free days per year, with winter lows of 8°C and summer highs of 28°C. Horseradish is frost tolerant, giving you more flexibility with planting dates.

How long does horseradish take to grow in Lisbon?

Horseradish typically takes 140-160 days from planting to harvest. In Lisbon's Hot-summer Mediterranean climate with 350 frost-free days, you have plenty of time to grow Horseradish to maturity. Plant root cuttings at 45-degree angle. Contain in bottomless bucket. 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 horseradish indoors in Lisbon?

Horseradish can potentially be grown indoors in Lisbon with proper conditions. It requires full sun to partial shade (2-4 hours of indirect light). Indoor growing extends your season beyond the Oct, Nov outdoor planting window. Use containers with good drainage and regular watering.

What month do I plant horseradish in Lisbon?

Plant Horseradish in Lisbon during October, November. These are the optimal months based on Lisbon's USDA Zone 9 climate, 350 frost-free days, and temperature range of 8°C to 28°C.

Is horseradish hard to grow in Lisbon?

Horseradish is rated "medium" to grow in Lisbon. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Horseradish in Lisbon is Good.

What grows well with horseradish in Lisbon?

In Lisbon, you can grow many companion plants alongside Horseradish. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Lisbon's Zone 9 climate.

Does horseradish need full sun in Lisbon?

Horseradish requires full sun to partial shade. Horseradish tolerates lower light. In Lisbon, 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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