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What to Plant in October in Montana

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

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Zone 3b

View full Zone 3b planting guide for October

Harvest

Zone 4a

View full Zone 4a planting guide for October

Harvest

Zone 4b

View full Zone 4b planting guide for October

Harvest

Zone 5a

View full Zone 5a planting guide for October

Harvest

Zone 5b

View full Zone 5b planting guide for October

Harvest

Zone 6a

View full Zone 6a planting guide for October

Harvest

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Useful in: r/vegetablegardening r/gardening
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Share this guide:
Useful in: r/vegetablegardening r/gardening
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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.

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