When to plant swiss chard in zone 4

Swiss Chard in USDA zone 4

Average zone 4 frost dates: last spring frost ≈ May 10, first fall frost ≈ Sep 25 (138 frost-free days). Local dates can vary by 2-3 weeks.

Sow 2 weeks before the last frost; harvest outer leaves all season.

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Other zones

• Swiss Chard in zone 3
• Swiss Chard in zone 5
• Swiss Chard in zone 6
• Swiss Chard in zone 7
• Swiss Chard in zone 8
• Swiss Chard in zone 9
• Swiss Chard in zone 10
• Zone 4 planting calendar