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What to Plant in January — USDA Zone 5a

Here's everything you can start, transplant, sow, and harvest in January in USDA Zone 5a. This zone has an average last spring frost around April 25 and first fall frost around October 8, with a growing season of approximately 166 days.

There are 1 planting activities for January in Zone 5a.

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Zone 5a Moderate season
166 days
Last Spring Frost April 25
166 growing days
First Fall Frost October 8

Where Is Zone 5a?

Harvest in January

Plant Type Date Range Days to Maturity
Garlic Vegetable 90–240 days
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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals, University Cooperative Extension planting guides. Planting dates are estimates based on average frost dates — local conditions may vary. Last updated: June 2026.

Sources & credits

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