When to Plant Swiss Chard in Unknown
State
Unknown
Cities Covered
13
USDA Zones
5a, 7a, 7b, 8b, 9a, 9b
Plant Type
Direct Sow
📅 Planting Calendar for Unknown
Based on ZIP 32143 (Zone 9b). Dates may vary by city.
Direct Sow Outdoors Tuesday, January 13, 2026
Note: Unknown spans multiple zones (5a, 7a, 7b, 8b, 9a, 9b). Select your city below for more precise dates.
🌿 Plant Details
Scientific Name Beta vulgaris subsp. vulgaris
Days to Maturity 55 days
Sun Requirements Full Sun to Partial Shade
Plant Spacing 8" apart
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Growing Swiss Chard in Unknown
Swiss Chard (Beta vulgaris subsp. vulgaris) is a popular garden vegetable in Unknown. The state spans USDA Hardiness Zones 5a, 7a, 7b, 8b, 9a, 9b, so planting dates can vary significantly depending on your location.
In most areas of Unknown, you can direct sow Swiss Chard outdoors around Tuesday, January 13, 2026.
For the most accurate planting dates, enter your ZIP code on our homepage or select your city from the list above.