Growing Mizuna in St. Louis
🇺🇸 Zone 4 Planting Guide · Humid subtropical climate
Quick Answer: Growing Mizuna in St. Louis
Yes, you can grow Mizuna in St. Louis, US! Plant during Feb, Mar, Apr, Aug, Sep for best results. St. Louis is in USDA Zone 4 with a Humid subtropical climate, offering 210 frost-free days per year. The difficulty level is easy, and Mizuna takes 21-40 days to harvest. Mizuna needs full sun to partial shade and regular watering.
Climate Match Analysis
St. Louis's climate requires careful timing. Winter lows (-6°C) drop below Mizuna's minimum (-5°C), so avoid cold months. Summer highs (32°C) exceed Mizuna's maximum (25°C), so plant early or provide shade. Follow the recommended planting months for success.
St. Louis Climate Data
Mizuna Planting Calendar for St. Louis
Green months show the best time to plant Mizuna in St. Louis
Mizuna Growing Requirements
Sunlight
Full Sun to Partial Shade
2-4 hours direct sunlight
Water
Regular
Consistent moisture, 1-2 inches/week
Days to Harvest
21-40
From planting to first harvest
Difficulty
Great for beginners
💡 Growing Tips for Mizuna
Very fast-growing. Cut-and-come-again harvesting. 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: Mizuna is frost tolerant — you can plant earlier in spring.
How to Grow Mizuna in St. Louis
St. Louis, US is in USDA Hardiness Zone 4 with a Humid subtropical climate (Köppen Cfa). With winter lows of -6°C and summer highs of 32°C, the growing season spans approximately 210 frost-free days. Mizuna is one of the easiest plants to grow in this climate.
Mizuna thrives in temperatures between 10°C and 20°C, requiring full sun to partial shade and regular watering. In St. Louis, the best months to plant Mizuna are February, March, April, August, September. Since Mizuna can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 21-40 days after planting.
St. Louis receives 1016mm of annual rainfall, which provides good natural moisture for Mizuna. Supplement with additional watering during dry spells.
Other Plants That Grow in St. Louis
More plants you can grow alongside Mizuna in St. Louis
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Frequently Asked Questions
Can I grow mizuna in St. Louis?
Yes! Mizuna can be successfully grown in St. Louis, US. St. Louis is in USDA Hardiness Zone 4 with a Humid subtropical climate. The difficulty level for growing Mizuna here is rated "easy". The best months to plant are February, March, April, August, September.
When should I plant mizuna in St. Louis?
In St. Louis, the recommended planting months for Mizuna are February, March, April, August, September. St. Louis has 210 frost-free days per year, with winter lows of -6°C and summer highs of 32°C. Mizuna is frost tolerant, giving you more flexibility with planting dates.
How long does mizuna take to grow in St. Louis?
Mizuna typically takes 21-40 days from planting to harvest. In St. Louis's Humid subtropical climate with 210 frost-free days, you have plenty of time to grow Mizuna to maturity. Very fast-growing. Cut-and-come-again harvesting. 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 mizuna indoors in St. Louis?
Mizuna can potentially be grown indoors in St. Louis with proper conditions. It requires full sun to partial shade (2-4 hours of indirect light). Indoor growing extends your season beyond the Feb, Mar, Apr, Aug, Sep outdoor planting window. Use containers with good drainage and regular watering.
What month do I plant mizuna in St. Louis?
Plant Mizuna in St. Louis during February, March, April, August, September. These are the optimal months based on St. Louis's USDA Zone 4 climate, 210 frost-free days, and temperature range of -6°C to 32°C.
Is mizuna hard to grow in St. Louis?
Mizuna is rated "easy" to grow in St. Louis. This is a great choice for beginners — it is forgiving and adapts well to this climate. The climate match for Mizuna in St. Louis is Moderate.
What grows well with mizuna in St. Louis?
In St. Louis, you can grow many companion plants alongside Mizuna. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in St. Louis's Zone 4 climate.
Does mizuna need full sun in St. Louis?
Mizuna requires full sun to partial shade. Mizuna tolerates lower light. In St. Louis, a spot with filtered or indirect light for 2-4 hours works well.