When to Plant Swiss Chard in Biwabik, Minnesota (55708)

Location

Biwabik, Minnesota

ZIP Code

55708

USDA Zone

Last Frost

Wednesday, May 20, 2026

📅 Planting Calendar

Direct Sow Outdoors Wednesday, April 22, 2026

Pro Tip: Sow Swiss Chard directly outdoors 4 weeks before your last frost date.

🌿 Plant Details

Scientific Name Beta vulgaris subsp. vulgaris

Days to Maturity 55 days

Mature Height 18-24"

Spread 12"

Type Leaf

Fruit Size N/A

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Regular (1-1.5 inches/week)

↔️

Spacing

8" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 5-10 days

Ready to Plant Swiss Chard in Biwabik?

Get your seeds now so they're ready by Wednesday, April 22, 2026.

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🤝 Good Companions

BeetOnionBeanCabbage

⚠️ Avoid Planting Near

LeekCorn

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Growing Swiss Chard in Zone 3b

Swiss Chard (Beta vulgaris subsp. vulgaris) is a popular garden vegetable. In Biwabik, Minnesota, which is in USDA Hardiness Zone 3b, you should direct sow seeds around Wednesday, April 22, 2026.

Your average last frost date is Wednesday, May 20, 2026. Swiss Chard grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.