What to plant in October in USDA zone 5

Sow outdoors in October — zone 5

Direct-sow these seeds into prepared garden beds or large containers. Soil temperature matters more than the calendar date — wait for a sustained warm-up before sowing tender crops.

• Garlic (mid-October)
• Cover crops, overwintering onions, shallots

Harvest in October — zone 5

These crops should be ready or in active harvest in October for zone 5 gardens. Pick fruiting crops every 2-3 days to keep production going.

• Root crops, kale, brassicas, winter squash, pumpkins, apples, late raspberries

Maintenance in October — zone 5

• Mulch garlic and perennials before hard frost

Universal October tasks

These apply across most US and UK gardens in October, regardless of zone.

• Plant garlic — the prime window for zones 4-7.
• Harvest and cure pumpkins, winter squash, sweet potatoes, and remaining tomatoes before hard frost.
• Sow cover crops on empty beds — winter rye, vetch, clover, oats.
• Plant garlic, shallots, and overwintering onions.
• Mulch perennial beds, garlic, and asparagus crowns.
• Clean and store tomato cages, stakes, and trellises.

Why this works for zone 5

Zone 5 has average annual minimum temperatures of -20 to -10°F (-29 to -23°C) and a frost-free window from late April / early May to late September / early October — about 150 growing days. Classic Midwest growing zone. Most US gardening books default to zone 5 timing. Mulch garlic and perennials before deep winter freezes.

Dates are zone-wide averages. Local microclimates (south-facing slopes, urban heat, lakeside warmth, elevation) can shift the window by 1-2 weeks within the same zone.

UK gardeners — October

October is the UK's garlic month — plant hardneck garlic by month's end. Sow overwintering broad beans, peas (Meteor, Douce Provence), and field beans. Plant out spring cabbage and overwintering onions. Harvest pumpkins, squash, apples, and main-crop potatoes.

Source and methodology

Frost-date averages from NOAA Climate Data Online within USDA zone 5. Hardiness boundaries from the USDA Plant Hardiness Zone Map (2023). Crop timing curated against US Cooperative Extension Service publications (UNL, UMN, NC State, Texas A&M, UF/IFAS, Oregon State) and cross-referenced against the RHS sowing calendar. Curated by the Growli editorial team.

Keep going

• ← September in zone 5
• November in zone 5 →
• All zones — what to plant in October
• USDA Zone 5 — frost dates and crop list
• Full 12-month planting calendar

Other zones — October

• What to plant in October in zone 3
• What to plant in October in zone 4
• What to plant in October in zone 6
• What to plant in October in zone 7
• What to plant in October in zone 8
• What to plant in October in zone 9
• What to plant in October in zone 10