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What to Plant in October — USDA Zone 5b

Here's everything you can start, transplant, sow, and harvest in October in USDA Zone 5b. This zone has an average last spring frost around April 18 and first fall frost around October 13, with a growing season of approximately 178 days.

There are 32 planting activities for October in Zone 5b.

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Zone 5b Moderate season
178 days
Last Spring Frost April 18
178 growing days
First Fall Frost October 13

Where Is Zone 5b?

Harvest in October

Plant Type Date Range Days to Maturity
Alliums Flower 28–42 days
Alpine Strawberries Fruit 90–180 days
Bee Balm Herb 90–120 days
Belgian Endive Vegetable 110–150 days
Black-eyed Susan Flower 60–80 days
Celosia Flower 60–90 days
Coreopsis Flower 60–80 days
Dahlias Flower 70–120 days
Daylily Flower 60–90 days
Echinacea (Purple Coneflower) Flower 70–90 days
Feverfew Herb 90–120 days
Gaillardia (Blanket Flower) Flower 70–100 days
Gladiolus Flower 70–100 days
Horseradish Vegetable 120–180 days
Hostas Flower 60–90 days
Hot Peppers Vegetable 70–120 days
Hydrangeas Flower 90–150 days
Impatiens Flower 60–75 days
Leeks Vegetable 90–150 days
Lilies Flower 70–120 days
Nasturtium Flower 55–65 days
Petunia Flower 70–90 days
Phlox Flower 80–110 days
Roses Flower 90–180 days
Salvia Flower 70–90 days
Sedum (Stonecrop) Flower 60–90 days
Strawberries Fruit 90–365 days
Sunchoke Vegetable 110–150 days
Sunflower Flower 70–100 days
Valerian Herb 120–180 days
Yarrow Flower 60–90 days
Zinnia Flower 60–70 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.