Fall vegetable care is about making the most of the second growing season that fall provides. While summer crops finish, cool-season vegetables thrive in the cooler weather: lettuce, spinach, kale, broccoli, carrots, beets and peas all grow well in fall, and many of them taste better after a light frost than they ever did in summer. A fall vegetable garden can produce fresh food for months after the summer garden has finished, as long as the crops are sown at the right time, watered steadily, protected from frost and slugs, and harvested before hard cold stops them.
The fall vegetable routine is different from the summer one. Growth is slower, days are shorter, water needs are lower, and the risks are different: frost instead of heat, slugs instead of aphids, rot instead of drought. This guide covers the crops that suit fall, how to care for them, and how to protect them, so the fall garden keeps producing for as long as possible. If you are unsure about vegetables in your area, check your local extension service.
Which vegetables grow in fall
The fall vegetable garden is built on cool-season crops. Salads are the easiest: lettuce, spinach, arugula, mustard greens, Asian greens and endive can be sown in succession through early fall and picked as cut-and-come-again leaves. Our guides to growing lettuce, growing spinach and growing arugula cover these crops. Root crops such as carrots, beets, radishes, turnips and parsnips sown in late summer mature in fall — see our growing carrots and growing beets guides. Brassicas are at their best in fall: kale, broccoli, cauliflower, cabbage, Brussels sprouts, collard greens and mustard greens all prefer cool weather. See our growing kale, growing broccoli and growing cabbage guides.
Peas sown in late summer can crop in fall in mild zones, and broad beans sown in late fall in mild zones give an early spring crop. Garlic planted in fall is a crop for next summer, not this fall — see our growing garlic guide. In warm zones, fall is the main vegetable season, and broccoli, cauliflower, lettuce, peas and carrots are sown in fall and grown through winter. The zone 9 fall gardening guide covers that pattern. Summer vegetables such as tomatoes, peppers, cucumbers and courgettes are finished by fall and should be cleared rather than nursed along — see our harvesting tomatoes guide for the end of the tomato season.
Watering and feeding fall vegetables
Fall vegetables need steady moisture, and irregular watering causes problems such as split roots in carrots and beets and bitter leaves in lettuce. Water in the morning, at the base of the plants, so leaves dry before night, and water deeply and less often rather than lightly and often. Our fall watering guide covers watering through the season, and our watering calculator gives a starting amount. Reduce watering as growth slows and temperatures drop, but do not let beds dry out, since dry soil in fall stresses plants and slows growth when they most need to mature before frost.
Feed fall vegetables lightly while they are actively growing, and stop once growth slows and frosts begin. A light liquid feed such as fish emulsion can help salads and brassicas while they are growing — see our fish emulsion fertilizer and fertilizing vegetables guides. Compost worked into the bed before sowing is often enough, and it feeds the soil as well as the plants. Do not feed with strong fertiliser late in fall, since it pushes soft growth that frost damages — see our fall fertilizing guide. Mulch around vegetables to hold moisture and suppress weeds, keeping mulch clear of stems, and see our mulching vegetables guide for the method.
Protecting fall vegetables from frost
Frost is the main risk to fall vegetables, and protection extends the season by weeks. A row cover or cloche over a bed adds several degrees of frost protection, and a cold frame is even better, giving protection from frost while letting in light and air. Our fall frost protection guide covers covers, cloches and cold frames in detail. Cover crops in the evening before a frost is forecast, and uncover them in the morning, since covers left on in warm daytime weather can cook plants. Water the soil before a frost, since damp soil holds heat better than dry soil, and mulch around roots to keep the soil warmer for longer.
Some vegetables need no protection from a light frost, and taste better after it: kale, Brussels sprouts, carrots, parsnips and beets all improve after a light frost. Others are damaged by any frost and must be picked or covered: lettuce, beans, courgettes and tomatoes are tender and should be harvested before a hard frost. Root crops can stay in the ground through light frosts if they are mulched, but they must be lifted before the ground freezes hard. Use the frost date calculator to find your average first frost, and watch the forecast rather than the average.
Pests and diseases in the fall vegetable garden
Slugs and snails are the main fall vegetable pest, thriving in damp, cool weather and eating salads, brassicas and seedlings overnight. Clear debris where they hide, pick them off after dark, and use barriers such as copper tape around pots. Our slugs and snails control guide covers the controls, and our fall pest control guide covers the wider fall pest routine. Aphids persist on late crops such as brassicas and lettuce, and a strong jet of water or removing infested leaves is often enough — see our aphids control guide. Cabbage worms can still be a problem on brassicas in early fall, so check leaves regularly and pick caterpillars off by hand; our cabbage worms guide covers them.
Diseases spread in cool, wet fall weather, so water at the base of plants rather than overhead, space plants so air moves between them, and clear diseased leaves at once rather than leaving them. Powdery mildew can affect late squash and other crops — see our powdery mildew treatment guide. Damping off can hit fall-sown seedlings in cold, wet compost, so sow in clean trays and fresh compost and avoid overwatering — see our damping off seedlings guide. Rotate crops so the same family does not go back into the same bed, which lets soil-borne disease build up, and do not compost diseased plants unless the heap runs hot.
Harvesting fall vegetables
Harvest fall vegetables as they mature, and do not leave them in the ground longer than they need to be. Salads are picked as cut-and-come-again leaves, taking outer leaves and letting the centre keep growing, and they should be picked before they bolt or turn bitter. Root crops are lifted when they are the size you want, and many taste sweeter after a light frost, but they must be lifted before the ground freezes hard. Brassicas are cut when heads are firm and dense, before they loosen or flower. Our fall harvesting guide covers harvesting, curing and storing in detail, with crop-by-crop guides for harvesting carrots, harvesting kale and harvesting broccoli.
Harvest in dry weather, in the morning after dew has dried, and handle everything gently, since bruises are where rot starts. If a hard frost is forecast and crops are nearly ready, harvest them rather than risking losing them overnight. Once a bed is cleared, do not leave it bare: sow a cover crop, spread compost, or mulch it, so the soil is protected through winter — see our fall soil preparation and cover crops for soil guides. Keep a note of what grew well and what did not, so next year's fall garden is planned from experience rather than guesswork.
Common fall vegetable mistakes
The most common mistake is sowing too late, so crops are too small to survive frost. Sow earlier than you think, and add two weeks to the days to maturity on the packet. The second is watering irregularly, which causes split roots and bitter leaves. The third is forgetting slug control, which can destroy a bed of seedlings overnight. The fourth is leaving tender crops out for a hard frost. The fifth is feeding too late or too heavily, which pushes soft growth that frost kills. The sixth is planting summer vegetables in fall and expecting them to grow, when they need warm soil and long days. And the seventh is leaving beds bare after harvest, which lets the soil degrade over winter. Sow early, water steadily, protect from frost and slugs, and put beds to bed properly when they are cleared.
Frequently asked questions
What vegetables can I grow in fall?
Cool-season crops: lettuce, spinach, kale, broccoli, cabbage, carrots, beets, radishes, turnips, peas and herbs such as cilantro and parsley. In warm zones, fall is the main season for broccoli, cauliflower and lettuce.
When should I sow vegetables for fall?
In late summer and early fall, counting backwards from your average first frost and adding about two weeks to the days to maturity, since plants grow more slowly as days shorten.
How do I protect fall vegetables from frost?
Use row covers, cloches or a cold frame, mulch around roots, and water the soil before a frost. Cover in the evening and uncover in the morning. See our fall frost protection guide.
Why are slugs eating my fall vegetables?
Slugs thrive in damp, cool fall weather. Clear debris where they hide, pick them off after dark, and use barriers. See our slugs and snails control guide.
Should I feed fall vegetables?
Lightly, while they are actively growing. Compost before sowing is often enough, and a light liquid feed can help. Stop feeding once growth slows and frosts begin. If you are unsure, check your local extension service.