What to Do in the Garden in October (Cool-Climate US)

Harvest before hard freeze

• Harvest root crops and store them cold (around 32 F) in humid conditions (Purdue Extension).
• Harvest pumpkins and winter squash before frost, once rinds have hardened; pick Brussels sprouts as they develop up the stem.
• Pick mature green tomatoes before frost and ripen them indoors.
• Harvest gourds when stems begin to brown, then cure them at 70-80 F for two to four weeks.

Clean up and cover the soil

• Clean up the vegetable garden October through November (UMN Extension); removing debris prevents pest and disease buildup.
• Direct-seed overwintering cover crops in October: winter wheat, winter rye, hairy vetch (UMN Extension).
• Mulch beds; October through the end of November is the fall window (UMN Extension).
• Leave asparagus foliage standing until it yellows; it insulates the crowns.
• Have soil tested (every three to five years) and work in organic matter now so beds are ready in spring.

Plant, dig, and store

• Complete spring-flowering bulb planting; the UMN window runs to mid-November.
• Dig tender bulbs, gladiolus, caladiums, cannas, dahlias, begonias, for winter storage after frost knocks them down (Purdue Extension).
• Keep plants, especially fall-planted trees and shrubs, well watered until the ground freezes.
• Rake or shred large fallen leaves so they don't smother the lawn, and keep mowing as needed.

Sources

Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.

• University of Minnesota Extension — Upper Midwest home garden care schedule — Vegetable garden cleanup October-November; overwintering cover crops in October (winter wheat, winter rye, hairy vetch); fall mulch window October-November; spring bulbs through mid-November; watering through November
• Purdue University Extension — October garden calendar (Indiana Yard and Garden) — Harvest and storage details (root crops at 32 F, squash/pumpkins before frost, gourd curing), digging tender bulbs, leaf raking, watering until ground freezes, soil testing and fall organic matter

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