When to Plant Swiss Chard in Lothair, Montana (59461)

Location

Lothair, Montana

ZIP Code

59461

USDA Zone

Last Frost

Friday, May 15, 2026

📅 Planting Calendar

Direct Sow Outdoors Friday, April 17, 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 Lothair?

Get your seeds now so they're ready by Friday, April 17, 2026.

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🤝 Good Companions

BeetOnionBeanCabbage

⚠️ Avoid Planting Near

LeekCorn

Other Plants for Lothair

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Growing Swiss Chard in Zone 4a

Swiss Chard (Beta vulgaris subsp. vulgaris) is a popular garden vegetable. In Lothair, Montana, which is in USDA Hardiness Zone 4a, you should direct sow seeds around Friday, April 17, 2026.

Your average last frost date is Friday, May 15, 2026. Swiss Chard grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.