Growing Brussels Sprouts in Zone 6b

Zone 6b has mild winters and a long growing season — good conditions for Brussels Sprouts. Last frost: Apr 15. First frost: Oct 22.

Planting Calendar

Indoor

Outdoor

Harvest

Mar 4Oct 22

Season: Apr 15 – Oct 22 (190 days)

Zone6b

Last FrostApr 15

First FrostOct 22

Season Length190 days

Days to Harvest100

SunFull Sun

Frost ToleranceModerate

Spacing24/sqft

When to Plant Brussels Sprouts in Zone 6b

Start Seeds Indoors: Mar 4

Start Brussels Sprouts seeds indoors around Mar 4 (6 weeks before last frost). Optimal germination temperature: 70°F. Germinates in 5–10 days.

Transplant Outdoors: Apr 1

Transplant Brussels Sprouts seedlings outdoors after Apr 1. Wait until soil temperature reaches 50°F. Space plants at 24/sqft. Harden off plants for a week before moving outside.

Harvest: Jun 30

First harvest approximately Jun 30 (~90 days from transplant). Continue harvesting until first frost (Oct 22).

Fall Planting: Jul 2

For a fall harvest, plant Brussels Sprouts around Jul 2 (16 weeks before first frost).

Companion Planting

✅ Thyme✅ Nasturtiums✅ Onions✅ Garlic

❌ Beans❌ Strawberries

Brussels Sprouts in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Frequently Asked Questions

When should I plant Brussels Sprouts in Zone 6b?

Start Brussels Sprouts seeds indoors around Mar 4. Transplant outdoors after Apr 1. Expect first harvest around Jun 30.

What is the last frost date for Zone 6b?

The average last spring frost date for Zone 6b is Apr 15. The first fall frost averages Oct 22, giving a 190-day growing season.

Can I grow Brussels Sprouts in Zone 6b?

Yes. Brussels Sprouts needs 100 days to harvest. Zone 6b has a 190-day growing season, which is sufficient.

What is the best month to plant Brussels Sprouts in Zone 6b?

The best time to start Brussels Sprouts in Zone 6b is Mar. Begin seeds indoors around Mar 4, then transplant outdoors after the last frost date of Apr 15.

What companion plants grow well with Brussels Sprouts?

Good companion plants for Brussels Sprouts include Thyme, Nasturtiums, Onions, Garlic. Avoid planting Brussels Sprouts near Beans, Strawberries.

How long does Brussels Sprouts take to harvest?

Brussels Sprouts takes approximately 100 days from planting to harvest. In Zone 6b, expect your first harvest around Jun 30.

Plan Your Brussels Sprouts Garden

Track Brussels Sprouts from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Brussels Sprouts Growing Guide