When to Plant Brussels Sprout in Portsmouth, Virginia (23708)

Location

Portsmouth, Virginia

ZIP Code

23708

USDA Zone

Last Frost

Sunday, March 15, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Sunday, December 21, 2025

Transplant Outdoors

Sunday, March 15, 2026

Based on last frost Sunday, March 15, 2026 · Zone 8b

Pro tip: Start Brussels Sprout seeds indoors 12 weeks before your last frost date, then transplant outdoors around Sunday, March 15, 2026.

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🌿 Plant Details

Scientific Name Brassica oleracea var. gemmifera

Days to Maturity 84 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 1-7 days

Ready to Plant Brussels Sprout in Portsmouth?

Get your seeds now so they're ready by Sunday, December 21, 2025.

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🛠️ Supplies You'll Need

🌱 Seed Starting Trays 🪴 Seed Starting Mix 💡 Grow Lights 🌡️ Heat Mat 🪵 Raised Garden Bed 🌍 Vegetable Garden Soil 🛠️ Hand Trowel Set 🚿 Watering Can

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🌾 Seed Saving Guide

🔴 Difficult

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Allow some sprouts to open into flowers. Harvest seed pods in summer/fall when dry.

Processing

Thresh dry pods, winnow to separate seeds from chaff.

Seed Viability

Up to 5 years when stored cool, dark, and dry.

Pro Tip

B. oleracea — crosses freely with other cole crops. Biennial nature makes isolation especially challenging.

Frequently Asked Questions

When should I plant Brussels Sprout in Portsmouth, Virginia? +

In Portsmouth (Zone 8b), start Brussels Sprout seeds indoors around Sunday, December 21, 2025 and transplant outdoors around Sunday, March 15, 2026.

What is the last frost date for Portsmouth, Virginia? +

The average last spring frost date for Portsmouth, Virginia (ZIP 23708) is around Sunday, March 15, 2026. This is based on NOAA climate normals for USDA Zone 8b.

How long does Brussels Sprout take to grow? +

Brussels Sprout typically matures in about 84 days from transplanting. In Portsmouth, that means you can expect harvest around Sunday, March 15, 2026 plus 84 days.

Should I start Brussels Sprout indoors or direct sow in Virginia? +

Brussels Sprout should be started indoors 12 weeks before your last frost date. In Portsmouth, that means starting around Sunday, December 21, 2025.

📚 More Brussels Sprout Planting Guides

🗺️

Brussels Sprout in Virginia

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 8b Brussels Sprout Guide

All cities in your zone · Avg dates

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Growing Brussels Sprout in Zone 8b

Brussels Sprout (Brassica oleracea var. gemmifera) is a popular garden vegetable. In Portsmouth, Virginia, which is in USDA Hardiness Zone 8b, you should start seeds indoors around Sunday, December 21, 2025.

Your average last frost date is Sunday, March 15, 2026. Plan to transplant your Brussels Sprout seedlings outdoors around Sunday, March 15, 2026, about 0 weeks after your last frost date.