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What to Plant in December — USDA Zone 1b

Here's everything you can start, transplant, sow, and harvest in December in USDA Zone 1b. This zone has an average last spring frost around June 7 and first fall frost around August 25, with a growing season of approximately 79 days.

Zone 1b Very short season
79 days
Last Spring Frost June 7
79 growing days
First Fall Frost August 25

Where Is Zone 1b?

There are no planting activities recommended for December in Zone 1b. Check nearby months for planting windows.

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: April 2026.