When to Plant Sweet Alyssum in Zullinger, Pennsylvania (17272)

Location

Zullinger, Pennsylvania

ZIP Code

17272

USDA Zone

Last Frost

Friday, April 10, 2026

📅 Planting Calendar

Direct Sow Outdoors Friday, March 13, 2026

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

🌿 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 Zullinger?

Get your seeds now so they're ready by Friday, March 13, 2026.

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Growing Sweet Alyssum in Zone 7a

Sweet Alyssum (Lobularia maritima) is a popular garden vegetable. In Zullinger, Pennsylvania, which is in USDA Hardiness Zone 7a, you should direct sow seeds around Friday, March 13, 2026.

Your average last frost date is Friday, April 10, 2026. Sweet Alyssum grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.