Growing Calendula in Seattle
🇺🇸 Zone 7 Planting Guide · Warm-summer Mediterranean climate
Quick Answer: Growing Calendula in Seattle
Yes, you can grow Calendula 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 easy, and Calendula takes 45-65 days to harvest. Calendula needs full sun and moderate watering.
Climate Match Analysis
Seattle's temperatures (2°C to 24°C) are within the tolerable range for Calendula (-5°C to 28°C), though not always in the optimal zone (10°C to 22°C). Plant during recommended months for best results.
Seattle Climate Data
Calendula Planting Calendar for Seattle
Green months show the best time to plant Calendula in Seattle
Calendula Growing Requirements
Sunlight
Full Sun
6+ hours direct sunlight
Water
Moderate
Keep soil consistently moist
Days to Harvest
45-65
From planting to first harvest
Difficulty
Great for beginners
💡 Growing Tips for Calendula
Deadhead for continuous blooms. Self-seeds readily. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.
Frost tolerance: Calendula is frost tolerant — you can plant earlier in spring.
How to Grow Calendula 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. Calendula is one of the easiest plants to grow in this climate.
Calendula thrives in temperatures between 10°C and 22°C, requiring full sun and moderate watering. In Seattle, the best months to plant Calendula are January, February, March, September, October. Since Calendula can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 45-65 days after planting.
With 953mm of annual rainfall, Seattle provides moderate natural moisture. This should be adequate for Calendula's water needs.
Other Plants That Grow in Seattle
More plants you can grow alongside Calendula in Seattle
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Frequently Asked Questions
Can I grow calendula in Seattle?
Yes! Calendula 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 Calendula here is rated "easy". The best months to plant are January, February, March, September, October.
When should I plant calendula in Seattle?
In Seattle, the recommended planting months for Calendula 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. Calendula is frost tolerant, giving you more flexibility with planting dates.
How long does calendula take to grow in Seattle?
Calendula typically takes 45-65 days from planting to harvest. In Seattle's Warm-summer Mediterranean climate with 250 frost-free days, you have plenty of time to grow Calendula to maturity. Deadhead for continuous blooms. Self-seeds readily. Can be planted 2-3 weeks before the last expected frost, giving it a head start on the growing season. Water steadily but avoid soggy soil. A 5-cm layer of organic mulch helps balance moisture and suppress weeds.
Can I grow calendula indoors in Seattle?
Calendula can potentially be grown indoors in Seattle 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 Jan, Feb, Mar, Sep, Oct outdoor planting window. Use containers with good drainage and moderate watering.
What month do I plant calendula in Seattle?
Plant Calendula 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 calendula hard to grow in Seattle?
Calendula is rated "easy" to grow in Seattle. This is a great choice for beginners — it is forgiving and adapts well to this climate. The climate match for Calendula in Seattle is Good.
What grows well with calendula in Seattle?
In Seattle, you can grow many companion plants alongside Calendula. 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 calendula need full sun in Seattle?
Calendula requires full sun. In Seattle, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.