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When to Plant Sweet Alyssum in Mc Clure, Pennsylvania (17841)

Location

Mc Clure, Pennsylvania

ZIP Code

17841

USDA Zone

6b

Last Frost

Wednesday, April 15, 2026

๐Ÿ“… Planting Calendar

Direct Sow Outdoors Wednesday, March 18, 2026

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

๐ŸŒฟ Plant Details

Scientific Name Lobularia maritima
Days to Maturity 45 days
Mature Height 4-8"
Spread 9"

โ˜€๏ธ Growing Requirements

โ˜€๏ธ

Sun

Full Sun to Partial Shade

๐Ÿ’ง

Water

Moderate (1 inch/week)

โ†”๏ธ

Spacing

6" apart

๐ŸŒฑ

Planting Depth

0.125" deep

Seeds typically germinate in 5-10 days

Ready to Plant Sweet Alyssum in Mc Clure?

Get your seeds now so they're ready by Wednesday, March 18, 2026.

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๐Ÿค Good Companions

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Growing Sweet Alyssum in Zone 6b

Sweet Alyssum (Lobularia maritima) is a popular garden vegetable. In Mc Clure, Pennsylvania, which is in USDA Hardiness Zone 6b, you should direct sow seeds around Wednesday, March 18, 2026.

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