Winter Vegetable Gardening in Zone 7a: A Month-by-Month Guide to Growing Food From November Through February

Most people in the Southeast stop thinking about their garden when the first hard frost hits. The summer crops are done. The tomatoes are pulled. The peppers are gone. It is time to close the season, right?

Not exactly.

In Zone 7a, where Louisville, Tennessee sits, the growing season does not end in October. It changes shape. The crops that survive winter are different from the summer crops, but they produce just as reliably if you know what to plant and when to plant it.

A winter garden gives you fresh greens in January when everything at the grocery store tastes tired. It stretches your growing season by four or five months. And it does not require expensive equipment or a greenhouse. You can start a winter garden with a packet of seeds, some straw, and a roll of row cover.

This guide covers what actually grows through the winter months, when to plant each crop, how to protect it from cold, and what to do each month from November through February. It is written for beginners who want to keep feeding themselves from the garden all year long.

The Crops That Survive and Thrive

Not every vegetable can handle cold. Many plants die at the first freeze. But a surprising number of vegetables not only survive cold weather, they actually grow better in it. Cold temperatures sweeten some crops and make others more tender.

Hardy Greens (Survive down to 10 degrees)

These are the backbone of a winter garden. They keep producing all winter long, even under snow.

Spinach grows through most winter days in Zone 7a and can survive down to about ten degrees Fahrenheit. It grows slowly when it is cold but does not stop entirely. You will harvest smaller leaves, but they are tender and sweet. Sow spinach in late August or early September for a fall harvest, and again in mid-September for winter harvest.

Kale is one of the toughest vegetables you can grow. It survives temperatures down to about ten degrees and some varieties handle even lower. Frost actually improves the flavor of kale, making it sweeter and less bitter. Plant kale in August or early September for harvest through winter. Lacinato, Curly Red, and Winterbor are reliable varieties for Zone 7a.

Swiss Chard handles light frost and can survive down to about 20 degrees. It does not go completely dormant like kale and spinach, so it may slow down but will not die. It comes back faster than spinach when temperatures rise in late winter. Sow in August or early September.

Mache (Corn Salad) is a lesser-known winter crop that is worth growing. It survives down to about zero degrees and grows slowly through the coldest months. The leaves are tender and nutty, great for salads without cooking. Sow in late September or early October. It is slow but reliable.

Cold-Hardy Brassicas (Survive down to 20 degrees)

Broccoli will survive a light frost but not hard, prolonged freezing. If you plant it late enough, it will establish before winter and then grow slowly through the coldest weeks. It will push new side shoots in late winter and early spring, giving you a second round of harvest.

Cabbage is hardy down to about 20 degrees. Small-headed varieties like Green Acre or Copenhagen Market do well in winter. Plant them in August for fall harvest or in mid-September for overwintering harvest in spring.

Mustard Greens grow fast and handle cold well. They survive down to about 20 degrees and grow quickly when temperatures dip. The leaves are peppery and delicious in sautes or salads. Sow in September.

Root Vegetables (Most survive to 20 degrees)

Carrots can stay in the ground all winter under mulch and be harvested whenever you need them. The soil insulates them. Pull them on a day when the ground is not frozen, or after a warm spell thaws the top few inches. Baby carrots planted in September will be ready by late fall. Larger carrots planted in August will stay through winter.

Beets grow well when planted in August or early September. The roots survive winter in the ground if covered with heavy mulch. You can harvest them throughout the winter on warm days. The greens are edible too and are just as cold-hardy as the roots.

Radishes are fast enough to grow through fall and into early winter if planted at the right time. Cherry Belle and French Breakfast varieties mature in about 25 days. Sow every two weeks from August through September. After November they grow very slowly and may not reach full size until spring warms up.

Garlic is technically a fall planting for next year harvest, but it is worth including. Plant individual cloves in October or November for a summer harvest the following year. Hardneck varieties like Music, German Red, and Turkish Sun are well-suited for Zone 7a.

When to Plant for Winter Harvest

The key to a successful winter garden is planting timing. You need to get seeds in the ground early enough that the plants establish themselves before winter, but not so early that they bolt or go to seed.

Here is the general rule: count backwards from your average first fall frost date. In Louisville, Tennessee, that is around October 15. Use that date and subtract the days to maturity listed on your seed packet, then subtract another two weeks for the slower growth that happens as temperatures drop.

Planted in July for winter harvest:

• Broccoli starts (transplants from a nursery)
• Cabbage starts (transplants from a nursery)

Planted in August for winter harvest:

• Kale (direct sow or transplant)
• Spinach (direct sow)
• Swiss Chard (direct sow)
• Carrots (direct sow, larger varieties)
• Beets (direct sow)
• Garlic (plant cloves, not seeds)

Planted in September for winter harvest:

• Mache (direct sow)
• Mustard Greens (direct sow)
• Spinach (direct sow for winter harvest)
• Radishes (direct sow)
• Carrots (direct sow, baby varieties)
• Lettuce (direct sow or transplant)

Planted in October for winter harvest:

• Garlic cloves (plant individual cloves)
• Overwintering onion sets
• Spinach (will sit through winter and grow in early spring)

Protecting the Winter Garden

You do not need expensive equipment to protect winter crops. You need three things: row cover, mulch, and something that holds them in place.

Row Cover

A row cover is a lightweight fabric that lets light and water through while trapping a small amount of warmth around the plants. It can raise the temperature around your crops by five to ten degrees, which is often enough to keep them alive through hard freezes.

Lightweight row cover (17 grams per square meter) is cheap, easy to install, and works well for most winter vegetables. You can drape it over hoops made from PVC pipe or wire to create a low tunnel. The fabric should touch the ground on the sides and be secured with soil, rocks, or landscape pins.

A single layer of row cover is usually enough in Zone 7a for hardy crops like kale and spinach. If a hard freeze is forecast (below 20 degrees), you can add a second layer for extra insulation.

Mulch

Mulch does not warm the ground the way row cover does, but it protects the soil from extreme temperature swings and keeps roots from freezing solid. Apply a three to four inch layer of straw, shredded leaves, or pine straw around your winter crops.

Mulch also keeps the soil from freezing hard, which makes harvesting easier on cold mornings. Pull back a section of mulch to harvest, then replace it afterward.

For garlic planted in the fall, a thick layer of mulch is essential. It protects the cloves from freezing and thaws that damage the roots. Four to six inches of straw over garlic beds is a good target.

Cold Frame or Hoop House

If you want to grow more through the winter, a cold frame or a small hoop house gives you extra protection. A cold frame is essentially a bottomless box with a transparent lid. It can keep the plants inside several degrees warmer than the ambient temperature.

For most beginners, a simple low tunnel with row cover is the best first step. It is cheap, fast to set up, and gives you a noticeable improvement over bare ground. If you want more, you can upgrade to a cold frame or a full hoop house later.

Monthly Winter Garden Tasks

November

November is about protecting what you planted and getting ready for deeper cold.

• Pull back excess mulch if it was covering growing crops too early
• Check row covers for damage and secure loose edges
• Harvest mature greens as needed
• Direct sow spinach in late November if you missed September
• Plant garlic cloves in late November if you did not do it in October
• Clean up summer crop debris from garden beds to reduce disease pressure
• Water deeply before hard freezes. Dry soil freezes faster and damages roots

December

December is the quiet month. Growth is slow or stopped for most crops. Your main job is maintenance and protection.

• Check row covers after wind events and heavy rain
• Do not walk on frozen beds. The soil structure can be damaged
• Harvest on warm afternoons when the ground is soft enough to pull roots
• Check mulch thickness and add more if it has settled
• Keep garlic beds well-mulched
• Plan next year garden layout. Use this slow time to think about what worked and what did not

January

January is the coldest month. Most crops are dormant or growing very slowly.

• Harvest spinach, kale, and mache on any day that is above 30 degrees
• Pull back mulch to harvest root vegetables
• Check on cold frames and hoop houses for ventilation on warm afternoons
• Clean and sharpen garden tools
• Order seeds for spring planting
• Start compost pile maintenance. Add kitchen scraps and leaves

February

February is when the garden starts waking up. Temperatures are still cool, but you will see growth in the hardiest crops.

• Harvest continues on kale, spinach, and any other overwintered crops
• Start checking for early spring growth in the garlic beds
• Direct sow cold-hardy crops in late February: lettuce, radishes, peas
• Add compost to beds that were empty through winter
• Begin planning spring planting schedule
• Clean up row covers and store them for next winter

Winter Garden Tips That Make the Difference

After a few seasons of winter gardening, the basics become second nature. But a few small habits separate the gardeners who get steady winter harvests from the ones who give up.

Water before freezes. Dry soil freezes faster and deeper than moist soil. Watering beds thoroughly a day before a hard freeze keeps the ground from freezing solid and protects the roots.

Harvest on warm afternoons. Frozen soil makes root vegetables impossible to pull. Wait for a day above 35 degrees or after a warm spell thaws the ground.

Leave some crops uncovered. Spinach and kale can handle much colder temperatures than most people expect. Full row cover is overkill for hardy greens. Use it mainly for crops like mache and young lettuce that benefit from the extra warmth.

Plan your winter beds early. Decide in late July what will be in your winter garden. Summer crops need to be pulled and beds prepped before planting the cold-weather crops. If you wait until September to decide, you will miss the best planting window for many crops.

Keep a garden journal. Note which crops survived, which did not, and which protection methods worked best. Winter gardening varies year to year depending on how hard the cold gets. Your own records will be more useful than any general guide.

Getting Started

Pick three or four crops from the list above. Do not try to grow everything at once. Start with spinach, kale, and garlic. Those three will teach you everything you need to know about winter gardening.

Get your seeds in the ground before October. Set up row covers. Mulch the beds. Then let the garden do its work.

Winter growing in Zone 7a is simpler than most beginners think. The plants already know how to handle cold. You just need to give them a little help and a little timing.

---

— C. Steward 🥕