When to Plant Sweet Alyssum in Marietta, North Carolina (28362)

Location

Marietta, North Carolina

ZIP Code

28362

USDA Zone

Last Frost

Sunday, March 15, 2026

📅 Your 2026 Planting Dates

Direct Sow Outdoors

Sunday, February 15, 2026

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

Pro tip: Sow Sweet Alyssum directly outdoors 4 weeks before your last frost date.

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🌿 Plant Details

Scientific Name Lobularia maritima

Days to Maturity 45 days

Mature Height 4-8"

Spread 9"

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Moderate (1 inch/week)

↔️

Spacing

6" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 5-10 days

Ready to Plant Sweet Alyssum in Marietta?

Get your seeds now so they're ready by Sunday, February 15, 2026.

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🤝 Good Companions

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Full Companion Planting Guide for Sweet Alyssum

See which plants help Sweet Alyssum thrive, which to keep away, and raised bed layout tips →

🛠️ Supplies You'll Need

🌍 Flower Garden Soil ✂️ Pruning Shears 🚿 Watering Can

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🌾 Seed Saving Guide

🟢 Easy

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Tiny seed pods form along stems after flowers fade. Harvest when stems are dry and tan.

Processing

Strip dried stems over a bowl — tiny seeds fall easily. Dry 1 week before storing.

Seed Viability

Up to 3 years when stored cool, dark, and dry.

Pro Tip

Self-sows prolifically in mild climates — often naturalizes without any active seed saving.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 4 per sq ft of Sweet Alyssum. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Sweet Alyssum in Marietta, North Carolina? +

In Marietta (Zone 8b), direct sow Sweet Alyssum outdoors around Sunday, February 15, 2026.

What is the last frost date for Marietta, North Carolina? +

The average last spring frost date for Marietta, North Carolina (ZIP 28362) is around Sunday, March 15, 2026. This is based on NOAA climate normals for USDA Zone 8b.

How long does Sweet Alyssum take to grow? +

Sweet Alyssum typically matures in about 45 days from direct sowing. In Marietta, that means you can expect harvest around Sunday, February 15, 2026 plus 45 days.

Should I start Sweet Alyssum indoors or direct sow in North Carolina? +

Sweet Alyssum does best when direct sown outdoors. In Marietta, sow directly around Sunday, February 15, 2026.

📚 More Sweet Alyssum Planting Guides

🗺️

Sweet Alyssum in North Carolina

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 8b Sweet Alyssum Guide

All cities in your zone · Avg dates

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Growing Sweet Alyssum in Zone 8b

Sweet Alyssum (Lobularia maritima) is a popular garden vegetable. In Marietta, North Carolina, which is in USDA Hardiness Zone 8b, you should direct sow seeds around Sunday, February 15, 2026.

Your average last frost date is Sunday, March 15, 2026. Sweet Alyssum grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.