When to Plant Brussels Sprouts in USDA Zone 6a
April to-do list for Zone 6a
April is a pivotal month for Zone 6a gardens. Focus on these tasks first and you'll set up the rest of the season for success.
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Set out brussels sprouts seedlings
Harden off for 7 days — a little more sun each day — before planting. That's the difference between a seedling that thrives and one that stalls.
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Plant brussels sprouts from seed, right in the garden
Your soil is warming°F — warm enough for these to germinate without babying.
Looking ahead to May
- Starting indoors: brussels sprouts
Brussels sprouts are a cold-hardy brassica that produces miniature cabbage-like heads along a tall stalk. Flavor improves after a light frost.
In Zone 6a, the average last spring frost is around April 10 and the first fall frost is around October 20, giving you a growing season of approximately 193 days.
Brussels Sprouts Planting Timeline — Zone 6a
Where Is USDA Zone 6a?
The map below highlights the states that contain Zone 6a. Click any state to see the Brussels Sprouts planting schedule for that location.
Brussels Sprouts Planting Calendar — Zone 6a
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 6 | Mar 6 – Mar 20 |
| Transplant Outdoors | April 10 | Apr 10 – Apr 24 |
| Direct Sow | March 27 | Mar 27 – Apr 17 |
| Harvest | July 10 | Jul 10 – Sep 4 |
| Fall Sowing | August 11 | Aug 11 – Aug 25 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | — |
| June | — |
| July | Harvest |
| August | Fall Sowing Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Free Zone 6a Planting Calendar PDF
Know exactly when to plant every crop in your zone. Get a printable month-by-month calendar customized for Zone 6a with start dates, transplant windows, and harvest times.
Growing Conditions
Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
Days to Maturity
90–130 days
Soil pH
6 – 7.5
Zone Temperature Range
°F to °F average annual minimum
Growing Season
193 days (Zone average)
Planting Specifications
| Planting Depth | 1 inches |
| Plant Spacing | 15 inches apart |
| Row Spacing | 24 inches between rows |
Growing Tips for Brussels Sprouts in Zone
Zone has a short growing season (~193 days). Start Brussels Sprouts indoors early and use season-extension techniques like row covers and cold frames.
Start seeds indoors 12-14 weeks before first fall frost. Stake tall plants to prevent toppling. Remove lower leaves as sprouts develop to improve air circulation.
Companion Planting
Good Companions
Avoid Planting Near
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Saving Brussels Sprouts Seeds
Recommended for Your Garden
Start seeds indoors with reusable cell trays and humidity domes.
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Keep your garden organized with durable, weather-resistant plant labels.
Related Plants
Brussels Sprouts in Other Zones
Brussels Sprouts by State
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Frequently Asked Questions
When should I plant Brussels Sprouts in Zone 6a?
In Zone 6a, plan your Brussels Sprouts planting around the average last frost date of April 10. Start seeds indoors around March 6. Direct sow outdoors around March 27. Transplant seedlings around April 10.
Can Brussels Sprouts grow in Zone 6a?
Yes, Brussels Sprouts can grow well in Zone 6a, hardy in USDA zones 2a through 10b. Zone 6a has a growing season of approximately 193 days, which is sufficient for Brussels Sprouts (90-130 days to maturity).
When can I harvest Brussels Sprouts in Zone 6a?
In Zone 6a, expect to harvest Brussels Sprouts from July 10 – September 4. Brussels Sprouts takes 90-130 days from planting to harvest.
What is the last frost date for Zone 6a?
The average last spring frost in Zone 6a is around April 10, and the first fall frost is around October 20. This gives a growing season of approximately 193 days. These are 50% probability dates — actual frost dates vary year to year.
What should I plant next to Brussels Sprouts?
Good companion plants for Brussels Sprouts include Carrots, Celery, Dill, Sage. These companions can help with pest control, pollination, and nutrient sharing.
Your Free Printable Garden Planner
A 24-page printable planner tailored to your zone. Planting dates, monthly task lists, harvest log, seed inventory, and succession charts — everything you need to plan a full season.