Growing Comfrey in Seattle
🇺🇸 Zone 7 Planting Guide · Warm-summer Mediterranean climate
Quick Answer: Growing Comfrey in Seattle
Yes, you can grow Comfrey in Seattle, US! Plant during Jan, Feb, Mar, Sep, Oct for best results. Seattle is in USDA Zone 7 with a Warm-summer Mediterranean climate, offering 250 frost-free days per year. The difficulty level is medium, and Comfrey takes 60-90 days to harvest. Comfrey needs full sun to partial shade and regular watering.
Climate Match Analysis
Seattle's temperatures (2°C to 24°C) are within the tolerable range for Comfrey (-15°C to 30°C), though not always in the optimal zone (12°C to 24°C). Plant during recommended months for best results.
Seattle Climate Data
Comfrey Planting Calendar for Seattle
Green months show the best time to plant Comfrey in Seattle
Comfrey Growing Requirements
Sunlight
Full Sun to Partial Shade
2-4 hours direct sunlight
Water
Regular
Consistent moisture, 1-2 inches/week
Days to Harvest
60-90
From planting to first harvest
Difficulty
Some experience helpful
💡 Growing Tips for Comfrey
Plant Bocking 14 variety (non-spreading). Chop and drop as mulch 4-5 times per season. 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: Comfrey is frost tolerant — you can plant earlier in spring.
How to Grow Comfrey in Seattle
Seattle, US is in USDA Hardiness Zone 7 with a Warm-summer Mediterranean climate (Köppen Csb). With winter lows of 2°C and summer highs of 24°C, the growing season spans approximately 250 frost-free days. Comfrey grows well with some gardening knowledge in this climate.
Comfrey thrives in temperatures between 12°C and 24°C, requiring full sun to partial shade and regular watering. In Seattle, the best months to plant Comfrey are January, February, March, September, October. Since Comfrey can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 60-90 days after planting.
With 953mm of annual rainfall, Seattle provides moderate natural moisture. You'll likely need to supplement with regular watering, especially during the growing season.
Other Plants That Grow in Seattle
More plants you can grow alongside Comfrey in Seattle
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Frequently Asked Questions
Can I grow comfrey in Seattle?
Yes! Comfrey can be successfully grown in Seattle, US. Seattle is in USDA Hardiness Zone 7 with a Warm-summer Mediterranean climate. The difficulty level for growing Comfrey here is rated "medium". The best months to plant are January, February, March, September, October.
When should I plant comfrey in Seattle?
In Seattle, the recommended planting months for Comfrey are January, February, March, September, October. Seattle has 250 frost-free days per year, with winter lows of 2°C and summer highs of 24°C. Comfrey is frost tolerant, giving you more flexibility with planting dates.
How long does comfrey take to grow in Seattle?
Comfrey typically takes 60-90 days from planting to harvest. In Seattle's Warm-summer Mediterranean climate with 250 frost-free days, you have plenty of time to grow Comfrey to maturity. Plant Bocking 14 variety (non-spreading). Chop and drop as mulch 4-5 times per season. 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 comfrey indoors in Seattle?
Comfrey can potentially be grown indoors in Seattle with proper conditions. It requires full sun to partial shade (2-4 hours of indirect light). Indoor growing extends your season beyond the Jan, Feb, Mar, Sep, Oct outdoor planting window. Use containers with good drainage and regular watering.
What month do I plant comfrey in Seattle?
Plant Comfrey in Seattle during January, February, March, September, October. These are the optimal months based on Seattle's USDA Zone 7 climate, 250 frost-free days, and temperature range of 2°C to 24°C.
Is comfrey hard to grow in Seattle?
Comfrey is rated "medium" to grow in Seattle. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Comfrey in Seattle is Good.
What grows well with comfrey in Seattle?
In Seattle, you can grow many companion plants alongside Comfrey. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Seattle's Zone 7 climate.
Does comfrey need full sun in Seattle?
Comfrey requires full sun to partial shade. Comfrey tolerates lower light. In Seattle, a spot with filtered or indirect light for 2-4 hours works well.