Cabbage is one of those crops that rewards patience. It is not fast, it is not glamorous, and it takes up real garden space. But a heavy head of cabbage harvested in the cool of fall, sweet and crisp from the cold, is genuinely satisfying. The key insight is that cabbage does not want heat. Let it rush through summer and the quality suffers. Let it mature when temperatures cool and you get the dense, flavorful heads worth growing for.
See the cabbage plant profile for variety comparisons and zone notes. For the full brassica family context, broccoli, cauliflower, Brussels sprouts, and kale all follow similar patterns.
When to plant cabbage
Cabbage is a cool-season crop, and timing keys off your frost dates. Use the frost dates tool to find your average last spring frost and first fall frost, then use the planting calendar to build your schedule.
Spring crop: Start seeds indoors 4 to 6 weeks before your target transplant date. Transplant outdoors 2 to 3 weeks before your average last frost. Cabbage seedlings tolerate light frost once established, but very young transplants need protection if temps drop hard. Spring-planted cabbage matures in summer; choose varieties with short days to maturity (60 to 70 days) to beat the heat.
Fall crop: For the most satisfying cabbage, aim for fall harvest. Count backward from your first fall frost: cabbage takes 60 to 100 days from transplant to harvest, so in much of the country you direct-sow or start transplants in late June to early July. Direct-seeded plants take up to 3 weeks longer than transplants, so in northern gardens transplants are the safer bet for fall (University of Minnesota Extension).
Site and soil
Cabbage needs full sun, 6 or more hours per day. It wants rich, consistently moist, well-drained soil with a pH of 6 to 7. If you are growing in amended garden beds, that range is easy to hit; in native soil, get a test done before you plant.
Fertility matters. Cabbage is a hungry feeder. Work compost or well-rotted manure into the bed before planting, then side-dress with a balanced organic fertilizer when plants are about 4 inches tall. A fertilizer with a bit of extra nitrogen supports the leafy growth that eventually wraps into the head.
Avoid planting cabbage where you have grown any brassica family member (broccoli, cauliflower, Brussels sprouts, kale, turnips, radishes, mustard) in the past 4 years. Rotating prevents the buildup of soil pathogens like clubroot and black rot. See the crop rotation guide for how to plan your brassica beds over a 4-year cycle.
Starting transplants indoors
Transplants give cabbage the head start it needs for spring crops and are the reliable path for fall crops in shorter-season climates.
Starting cabbage indoors
Sow 4 to 6 weeks early
Fill cells with sterile seed-starting mix and press seeds 1/4 inch deep. No bottom heat needed; normal room temperature (60 to 70 degrees F) works well. Higher temps cause leggy growth.
Light as soon as sprouts appear
Move trays under grow lights within a few hours of emergence. Keep the light close (a few inches above the canopy) for stocky seedlings.
Fertilize at the first true leaf
Begin with a half-strength liquid fertilizer at the first true leaf, moving to twice a week once two true leaves are visible.
Harden off before transplanting
About a week before moving outside, start setting plants in a sheltered spot for a couple of hours a day. Gradually increase sun and wind exposure. Bring in if temps drop below 40 degrees F at night.
Transplant at the right depth
Set each transplant so it sits at the same depth as it was in its cell. Water in with a starter solution high in phosphorus.
Review the complete seed-starting guide and hardening-off guide for the full process.
Spacing
Give cabbage real space. The University of Minnesota Extension recommends 15 to 18 inches between plants within rows, and 24 to 30 inches between rows. Crowded cabbage produces smaller heads and worse airflow, which invites disease.
In intensive raised beds, 18-inch spacing in all directions works, but do not push it much closer. A spacing calculator can help you plan how many plants fit in your beds before you start.
Watering and feeding
Cabbage wants 1 inch of water per week from rain or irrigation, consistently delivered. Irregular watering is the fastest way to get poor-quality heads: if plants dry out and then get drenched, heads can split as they take up water rapidly. Water stress also leads to bitterness and loose heads.
Mulch around plants 3 to 4 inches deep to hold moisture and moderate soil temperature. The mulching guide has the full rundown on materials and method.
Side-dress once with a balanced organic fertilizer when plants are 4 to 6 inches tall. Avoid heavy nitrogen applications once heads begin to form; pushing leafy growth at that stage can cause loose, open heads.
Common problems
Cabbage shares its pest roster with other brassicas. The big four to watch:
Cabbage worms and imported cabbage worms: The larvae of white butterflies you see fluttering around the garden. They chew ragged holes in leaves and bore into forming heads. Check the undersides of leaves for pale yellow eggs. Bacillus thuringiensis (Bt) sprayed when larvae are small is the standard organic control.
Cabbage loopers: Similar damage, from the larvae of a moth. Look for the distinctive looping walk. Same Bt control applies.
Cabbage maggots: Fly larvae that feed on roots, causing plants to wilt and sometimes die. Row cover from transplant day is the most effective prevention, since the fly cannot lay eggs around the roots.
Flea beetles: Tiny beetles that chew small shotgun-hole patterns in seedling leaves. Young transplants are most vulnerable. Row cover during establishment is the best defense.
A floating row cover like Agribon AG-19 laid directly over transplants and anchored at the edges blocks all four pests during the most vulnerable weeks.
Diseases to watch: clubroot deforms roots and stunts plants (maintain rotation, keep pH above 6.8 in affected beds); black rot causes yellow V-shaped lesions at leaf margins (use certified disease-free seed, avoid overhead watering); downy mildew appears in cool, wet weather. Good airflow, rotation, and dry foliage overnight prevent most disease problems.
Aphids can also cluster on forming heads; a firm water blast or insecticidal soap handles light infestations.
Harvesting
Cabbage heads are ready when they feel solid and firm when you squeeze them, not springy or hollow-feeling. Most varieties mature at 60 to 100 days from transplant, depending on variety and season.
Cut the head with a sharp knife, leaving several outer "wrapper" leaves attached. Leave the stump in the ground; many varieties will produce smaller secondary heads from the stump after harvest.
Fall heads can hold in the garden through light frosts. Cabbage tolerates temperatures down to the upper 20s degrees F, and cold actually improves sweetness slightly. If overnight lows will hit below 25 degrees F, drape a row cover over the heads.
Harvested heads keep for weeks in cold, moist storage (32 to 40 degrees F, high humidity). A root cellar is ideal; an insulated garage or cool basement will work for shorter periods.
When should I plant cabbage?
Timing depends on whether you are growing a spring or fall crop. For spring, start transplants indoors 4 to 6 weeks before your last frost date and set them out 2 to 3 weeks before that date. For fall, count backward from your first fall frost: most varieties need 60 to 100 days from transplant to maturity, so figure out how many days before first frost you need to transplant (plus 4 to 6 weeks for indoor starting). The frost dates tool and planting calendar will calculate the exact dates for your ZIP.
How far apart should I plant cabbage?
Space plants 15 to 18 inches apart within rows, with 24 to 30 inches between rows. In intensive raised beds, 18 inches in all directions is workable. Crowding reduces head size and invites disease by cutting airflow. Use the spacing calculator to plan how many plants fit your bed.
How do I prevent cabbage heads from splitting?
Splitting happens when plants take up water rapidly after a dry period, usually just before harvest. To reduce the risk, water consistently throughout the season so the plant never dries out. Once heads approach full size, reduce watering. If a heavy rain is coming, harvest ready heads early. On heads you want to hold a bit longer, twisting the plant a quarter-turn severs some roots and slows water uptake.
Why is my cabbage not forming a head?
The most common cause is heat stress: if cabbage spends its head-forming stage in temperatures above about 80 degrees F it often produces loose or no head. This is why spring crops need fast-maturing varieties and why fall crops generally outperform spring in most climates. Other causes include overwatering (waterlogged roots), nitrogen deficiency, or insect damage to the central growing point when the plant was young.
What can I plant with cabbage?
Cabbage is compatible with many vegetables. Dill and thyme nearby can repel cabbage moths. Avoid planting cabbage near other brassicas in the same bed (they share disease pressure) or strawberries. The companion planting guide covers the full picture of what grows well together and what to keep apart.