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When to Plant Swiss Chard in Portland, Arkansas (71663)

Location

Portland, Arkansas

ZIP Code

71663

USDA Zone

8b

Last Frost

Sunday, March 15, 2026

📅 Planting Calendar

Direct Sow Outdoors Sunday, February 15, 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 Portland?

Get your seeds now so they're ready by Sunday, February 15, 2026.

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🤝 Good Companions

BeetOnionBeanCabbage

⚠️ Avoid Planting Near

LeekCorn

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Growing Swiss Chard in Zone 8b

Swiss Chard (Beta vulgaris subsp. vulgaris) is a popular garden vegetable. In Portland, Arkansas, which is in USDA Hardiness Zone 8b, you should direct sow seeds around Sunday, February 15, 2026.

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