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What to Plant in September in South Dakota

Here's what you can plant in South Dakota during September. Since South Dakota spans multiple USDA zones, planting dates vary by location. Find your zone below.

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Zone 4a

View full Zone 4a planting guide for September

Harvest

Zone 4b

View full Zone 4b planting guide for September

Harvest

Zone 5a

View full Zone 5a planting guide for September

Harvest

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Last updated: May 2026.

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Every number on this page traces back to a primary horticulture or government data source. Click through to verify.