When to Plant Lemon Balm in Port Huron, Michigan (48060)
Location
Port Huron, Michigan
ZIP Code
48060
USDA Zone
6b
Last Frost
Wednesday, April 15, 2026
๐ Planting Calendar
Pro Tip: Start Lemon Balm seeds indoors 6 weeks before your last frost date, then transplant outdoors around Wednesday, April 29, 2026.
๐ฟ Plant Details
โ๏ธ Growing Requirements
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Sun
Partial Shade to Full Sun
๐ง
Water
Regular (keep moist)
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Spacing
18" apart
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Planting Depth
0.125" deep
Seeds typically germinate in 10-14 days
Ready to Plant Lemon Balm in Port Huron?
Get your seeds now so they're ready by Wednesday, March 4, 2026.
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๐ค Good Companions
Other Plants for Port Huron
Growing Lemon Balm in Zone 6b
Lemon Balm (Melissa officinalis) is a popular garden vegetable. In Port Huron, Michigan, which is in USDA Hardiness Zone 6b, you should start seeds indoors around Wednesday, March 4, 2026.
Your average last frost date is Wednesday, April 15, 2026. Plan to transplant your Lemon Balm seedlings outdoors around Wednesday, April 29, 2026, about 2 weeks after your last frost date.