When to Plant Cosmos in Long Lake, Minnesota (55356)
Location
Long Lake, Minnesota
ZIP Code
55356
USDA Zone
4b
Last Frost
Tuesday, May 5, 2026
๐ Planting Calendar
Pro Tip: Sow Cosmos directly outdoors around your last frost date when soil starts to warm.
๐ฟ Plant Details
โ๏ธ Growing Requirements
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Sun
Full Sun (6-8 hours)
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Water
Low-Moderate
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Spacing
18" apart
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Planting Depth
0.25" deep
Seeds typically germinate in 7-14 days
Ready to Plant Cosmos in Long Lake?
Get your seeds now so they're ready by Tuesday, May 5, 2026.
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Other Plants for Long Lake
Growing Cosmos in Zone 4b
Cosmos (Cosmos bipinnatus) is a popular garden vegetable. In Long Lake, Minnesota, which is in USDA Hardiness Zone 4b, you should direct sow seeds around Tuesday, May 5, 2026.
Your average last frost date is Tuesday, May 5, 2026. Cosmos grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.