What Vegetables Grow in Winter

What vegetables grow in winter

Kale, spinach, collards, arugula, carrots, garlic, leeks, and several other cold-tolerant vegetables grow through winter in most US zones. In Zones 6–9, these crops grow outdoors without protection. In Zones 3–5, simple low tunnels or cold frames extend the season significantly.

Winter gardening in the US is more practical than most gardeners realize. The key is understanding which vegetables tolerate cold — even freezing — and timing the planting to match your zone. Start at the right time and you harvest through the coldest months; start too late and plants die before they mature.

Understanding cold hardiness ratings

Vegetables are grouped by their frost tolerance. “Hardy” vegetables survive hard freezes (below 28°F). “Semi-hardy” vegetables tolerate light frost (28–32°F). “Tender” vegetables die at any frost.

All vegetables in the first two rows are winter growing candidates. Semi-hardy vegetables extend the season with light protection in Zones 4–6.

Vegetables that grow through winter by zone

Zones 3–5 (severe winters)

With a cold frame, low tunnel, or row covers, these zones can produce winter vegetables:

Grow under cover:

• Mache (corn salad) — hardy to -10°F; survives winter without heat in cold frames
• Spinach — survives below 20°F when established; excellent cold-frame crop
• Arugula — bolts in heat but thrives under cover in winter
• Claytonia (miner’s lettuce) — very cold-hardy; produces through hard freezes
• Kale — survives below 0°F in cold frames; may overwinter in protected spots

Plant in fall for spring harvest:

• Garlic — plant in October; overwinters in the ground; harvest next July
• Overwintering onions — set in fall, harvest the following spring

The University of Vermont Extension recommends 4-mil clear plastic low tunnels as the most cost-effective option for extending vegetable growing through Zone 4–5 winters.

Zones 6–7 (moderate winters)

Most cold-hardy vegetables grow outdoors without protection in these zones:

• Kale and collards — highly reliable winter crops in Zones 6–7; survive temperatures down to 10°F when established
• Spinach — grows slowly in winter but provides steady harvests; established plants survive to 20°F
• Arugula — may die back in the coldest weeks, then regrow from roots in early spring
• Carrots — left in the ground after the first frost, they sweeten significantly; harvest through winter as needed
• Leeks — overwinter well in Zones 6–7; harvest through December and January
• Garlic — planted in October through November; grows roots before going dormant; resumes spring growth and harvests in June
• Swiss chard — survives light frost in Zone 7; needs cover in Zone 6 during coldest weeks
• Brussels sprouts — slow-growing but rewarding; harvest through December in Zone 6

See our growing spinach guide for fall planting timing and variety selection.

Zones 8–9 (mild winters)

In mild-winter zones, the selection expands dramatically. Nearly all cool-season vegetables thrive in winter:

• Broccoli, cauliflower, and cabbage — plant in September; harvest November through February
• Beets and turnips — plant September through October; harvest November through March
• All lettuce types — grow through winter without bolting (no summer heat to trigger it)
• Peas — plant in October through November; harvest February through March
• Carrots and parsnips — grow slowly through winter; harvest as needed
• Kale, spinach, arugula, and all greens — highly productive winter crops

In Zone 9, the combination of mild winters and hot summers means winter is the primary growing season for many vegetables. Tomatoes and peppers are planted in late summer for fall–winter harvest.

Zones 10–11 (warm winters)

In South Florida, Hawaii, and the warmest parts of California and Arizona, true winter crops are largely irrelevant — most vegetables grow year-round, but summer heat (not winter cold) limits what can be grown.

Winter remains the most productive period for:

• Root vegetables (carrots, beets, radishes)
• Leafy greens (all types)
• Cole crops (broccoli, cauliflower, kale, cabbage)
• Legumes (peas, favas)

Tomatoes and peppers planted in late summer can produce through winter in Zone 10b and 11. The challenge is avoiding freeze damage in the rare cold snaps that affect even these warm zones.

The best individual winter vegetables

Kale

Cold hardiness: Down to 0°F and below

Kale is the backbone of US winter gardens in Zones 5–8. Flavor improves dramatically after frost — the plant converts starches to sugars as a freeze-protection mechanism, and the leaves develop a sweeter, richer taste.

Varieties for winter growing:

• ‘Winterbor’ — the most cold-hardy, crinkled leaf type
• ‘Lacinato’ (dinosaur kale) — flat leaves; excellent cold tolerance; slower growing
• ‘Red Russian’ — tender leaves; less cold-hardy but productive in Zones 6–8

Plant kale in late summer (August in most zones) to give it time to establish before cold arrives. Established plants with roots to 12 inches deep survive temperatures that would kill a newly transplanted seedling.

See our guide on kale companion plants for what to grow alongside kale in fall and winter beds.

Spinach

Cold hardiness: Down to 15°F when established

Spinach is the most productive cool-season green in US gardens. It grows slowly in winter but produces steadily, and established plants survive significant cold.

Key timing: plant in late August to early September in Zones 5–7 so plants reach 4 inches before the first hard frost. A 4-inch plant with a strong root system overwinters reliably. A seedling at first frost rarely survives without protection.

For fall and winter spinach growing details, see our spinach growing guide.

Garlic

Cold hardiness: Hardy to Zone 3

Garlic planted in fall is one of the most reliable winter crops in the US. Plant cloves in October through November, 4–6 weeks before hard frost, so roots establish before dormancy.

The garlic overwinters in the ground, resumes growth in late February or March, and is harvested in June or July. Fall-planted garlic consistently outperforms spring-planted garlic in flavor and bulb size.

Full planting details in our how to grow garlic guide.

Carrots

Cold hardiness: Hardy to Zone 3 in the ground

Carrots left in the ground after the first hard frost can be harvested through winter. The cold actually improves them — like kale, carrots convert starches to sugars as temperatures drop, developing a sweeter flavor than summer-harvested carrots.

To overwinter carrots:

• Leave them in the ground after the tops die back in fall
• Mulch with 4–6 inches of straw if temperatures below 10°F are expected
• Dig as needed through winter — they hold in the ground through hard freezes

Carrots planted in late summer (August in Zones 5–7) are ready to harvest by November and can stay in the ground until March.

See our guide on how to plant carrots for fall planting timing.

Mache (Corn Salad)

Cold hardiness: Hardy to -10°F

Mache is one of the most overlooked winter vegetables for US gardens. Small, rosette-forming plants produce mild, nutty-flavored leaves and tolerate extreme cold that kills other greens.

Plant mache in September in Zones 4–7. It grows slowly through winter and provides harvests from November through March. It bolts quickly in spring when temperatures warm, so treat it as a winter-only crop.

Tools for extending the season

In colder zones, simple season extension tools dramatically expand what’s possible.

Row covers (sold as Reemay, Agribon, or similar) are the most practical starting point. A single layer of floating row cover (1.5 oz weight) adds 4–6°F. Doubled covers add more protection. They are inexpensive, reusable, and allow water and light through.

Cold frames — bottomless boxes with a glass or polycarbonate lid — create a mini-greenhouse over a small bed. They trap solar heat during the day and retain it at night, raising effective temperatures by 15–30°F depending on design.

For cold frame construction and use, NC State Cooperative Extension provides excellent guidance through their vegetable growing series for Southeast gardeners.

Timing winter vegetable planting

The timing formula for winter vegetables:

First fall frost date − growing days to maturity = latest planting date

Example for Zone 6b (Nashville, first frost October 25):

• Spinach matures in 40–45 days
• October 25 − 45 days = earliest plant by September 10

But this only gets you to harvest at first frost — for winter production, add 2–3 weeks to give plants time to size up before cold slows growth dramatically.

Practical planting windows by zone:

Use our last frost date by zip code tool to find your exact date.

Protecting winter vegetable beds

Mulching: 3–4 inches of straw mulch around plants moderates soil temperature and prevents freeze-thaw heaving. It won’t keep plants warm above ground, but it protects roots and allows plants to withstand harder freezes than unmulched plants.

Watering in fall: Water deeply before the first frost — well-hydrated plants tolerate cold better than dry ones. Ice crystals form more slowly in moist plant tissue.

Harvest before a hard freeze: If temperatures below 20°F are forecast for Zone 7 or 8, harvest leafy greens before the freeze. They can be stored in the refrigerator for several days. The plants often survive the freeze and regrow, but harvested leaves are better quality than freeze-thawed ones.

Winterizing the garden: Our how to winterize garden guide covers end-of-season cleanup and preparation for the next planting season.

Winter gardening rewards the gardener who plans ahead. Most of the work happens in August and September when the garden is still full of summer crops — but the payoff is fresh vegetables through the coldest months of the year.