Growing Kohlrabi in Boston
🇺🇸 Zone 4 Planting Guide · Hot-summer humid continental climate
Quick Answer: Growing Kohlrabi in Boston
Yes, you can grow Kohlrabi in Boston, US! Plant during Feb, Mar, Apr, Aug, Sep for best results. Boston is in USDA Zone 4 with a Hot-summer humid continental climate, offering 200 frost-free days per year. The difficulty level is medium, and Kohlrabi takes 45-60 days to harvest. Kohlrabi needs full sun and regular watering.
Climate Match Analysis
Boston's climate requires careful timing. Winter lows (-5°C) drop below Kohlrabi's minimum (0°C), so avoid cold months. Summer highs (28°C) exceed Kohlrabi's maximum (24°C), so plant early or provide shade. Follow the recommended planting months for success.
Boston Climate Data
Kohlrabi Planting Calendar for Boston
Green months show the best time to plant Kohlrabi in Boston
Kohlrabi Growing Requirements
Sunlight
Full Sun
6+ hours direct sunlight
Water
Regular
Consistent moisture, 1-2 inches/week
Days to Harvest
45-60
From planting to first harvest
Difficulty
Some experience helpful
💡 Growing Tips for Kohlrabi
Harvest when tennis-ball sized. Larger ones become woody. 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: Kohlrabi is frost tolerant — you can plant earlier in spring.
How to Grow Kohlrabi in Boston
Boston, US is in USDA Hardiness Zone 4 with a Hot-summer humid continental climate (Köppen Dfa). With winter lows of -5°C and summer highs of 28°C, the growing season spans approximately 200 frost-free days. Kohlrabi grows well with some gardening knowledge in this climate.
Kohlrabi thrives in temperatures between 10°C and 20°C, requiring full sun and regular watering. In Boston, the best months to plant Kohlrabi are February, March, April, August, September. Since Kohlrabi can tolerate frost, you have flexibility to plant earlier in the season or extend into cooler months. Expect to harvest in approximately 45-60 days after planting.
Boston receives 1112mm of annual rainfall, which provides good natural moisture for Kohlrabi. Supplement with additional watering during dry spells.
Other Plants That Grow in Boston
More plants you can grow alongside Kohlrabi in Boston
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Frequently Asked Questions
Can I grow kohlrabi in Boston?
Yes! Kohlrabi can be successfully grown in Boston, US. Boston is in USDA Hardiness Zone 4 with a Hot-summer humid continental climate. The difficulty level for growing Kohlrabi here is rated "medium". The best months to plant are February, March, April, August, September.
When should I plant kohlrabi in Boston?
In Boston, the recommended planting months for Kohlrabi are February, March, April, August, September. Boston has 200 frost-free days per year, with winter lows of -5°C and summer highs of 28°C. Kohlrabi is frost tolerant, giving you more flexibility with planting dates.
How long does kohlrabi take to grow in Boston?
Kohlrabi typically takes 45-60 days from planting to harvest. In Boston's Hot-summer humid continental climate with 200 frost-free days, you have plenty of time to grow Kohlrabi to maturity. Harvest when tennis-ball sized. Larger ones become woody. 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 kohlrabi indoors in Boston?
Kohlrabi can potentially be grown indoors in Boston 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 Feb, Mar, Apr, Aug, Sep outdoor planting window. Use containers with good drainage and regular watering.
What month do I plant kohlrabi in Boston?
Plant Kohlrabi in Boston during February, March, April, August, September. These are the optimal months based on Boston's USDA Zone 4 climate, 200 frost-free days, and temperature range of -5°C to 28°C.
Is kohlrabi hard to grow in Boston?
Kohlrabi is rated "medium" to grow in Boston. Some gardening experience is helpful. Pay attention to watering schedules and planting timing. The climate match for Kohlrabi in Boston is Moderate.
What grows well with kohlrabi in Boston?
In Boston, you can grow many companion plants alongside Kohlrabi. Good options from the same planting window include Tomato, Basil, Lettuce, Carrot and 2 more. These plants share similar planting months and thrive in Boston's Zone 4 climate.
Does kohlrabi need full sun in Boston?
Kohlrabi requires full sun. In Boston, provide at least 6 hours of direct sunlight daily. Most garden locations with southern exposure will work well.