Seed to Harvest Growing Guide
How to grow cabbage
Grow crisp, well-filled cabbage heads from seed. Learn when to sow, how to establish transplants, protect developing leaves, prevent splitting, and harvest for fresh eating or storage.
Crop family: Brassicaceae
Before you begin
Match cabbage to the coolest part of the season.
Cabbage grows best when leaves develop steadily in cool weather and the head matures before sustained heat. Start compact transplants indoors for spring, or count backward from mild fall weather; in hot-summer regions, fall crops are often the most dependable.
Build your cabbage-growing plan
Plan the cool window, transplant count, bed space, and harvest target.
Reserve a sunny, well-drained bed and time the crop so heads form in mild weather rather than summer heat.
Cabbage at a glance
The path from seed to harvest
Select any milestone to jump directly to its full instructions.
Stage 1–3
Start sturdy seedlings, then transplant before heat
Choose compact transplants with healthy roots. Give them a gradual transition outdoors and enough room for the mature head size listed on the seed packet.
Prepare a fertile bed
Choose full sun and fertile, well-drained soil that holds moisture. Aim for a soil pH of 6.0–7.0 and mix in finished compost before planting.
- Use a soil test to guide lime and fertilizer.
- Rotate away from brassicas for disease control.
- Plan for row cover before planting if caterpillars are common.
Start seed indoors
Sow 1/4–1/2 inch deep about 4–6 weeks before transplanting. Keep the mix moist and give seedlings strong light.
Harden and transplant
Gradually acclimate seedlings, then set them out about 2–3 weeks before the last spring frost.
- Space plants 15–18 inches apart; allow more room for large storage varieties as directed on the packet.
- Leave 30–36 inches between rows.
- Set roots firmly into the soil without burying the growing point.
- Water immediately and protect from wind.
Stage 4
Keep growth uninterrupted from transplant to head
Cabbage needs even moisture, steady nutrition, shallow weed control, and relief from heat stress.
Water evenly
Supply about 1–2 inches of water per week, including rain. Keep the root zone consistently moist as the head develops.
Feed by test
Cabbage is a moderately heavy feeder. Follow a soil test and side-dress nitrogen when plants are established if needed.
Keep roots cool
Mulch after the soil warms to conserve moisture, suppress weeds, and moderate temperature swings.
Inspect developing leaves
Look under leaves and into the developing head for caterpillars and aphids before damage becomes hidden.
Growth checkpoints
Know what to watch for.
Use plant development—not only the calendar—to judge transplant readiness, steady growth, and harvest timing.
Emergence
Seedlings appear with round cotyledons; move them into strong light so stems stay short and sturdy.
Transplant ready
Harden compact plants gradually and transplant before they become root-bound or stressed.
Head initiation
Inner leaves begin to fold inward and overlap. Keep the large outer leaves intact: they help build the head.
Harvest window
Check head firmness with a gentle squeeze. Harvest when solid for the variety, before the head cracks.
Stage 5
Diagnose cabbage problems early
Open a symptom to compare what you see, likely causes, and the next practical check.
PestCabbage worms and loopersRagged holes, green caterpillars, or frass around leaves and heads
Inspect leaf undersides and the crown, handpick caterpillars, and use insect netting before moths arrive. If needed, use a labeled Bacillus thuringiensis product on small larvae and follow the label.
PestCabbage aphidsWaxy gray-green colonies on curled leaves or inside the crown
Check the newest growth and leaf undersides. Wash off small colonies, conserve beneficial insects, remove badly infested leaves, and avoid excess nitrogen that encourages soft growth.
DiseaseBlack rotYellow V-shaped lesions advancing inward from leaf margins
Remove infected plants and residue, avoid overhead irrigation and working among wet plants, rotate away from brassicas, control crucifer weeds, and begin with clean seed and transplants.
Growth disorderHead splittingA firm head cracks open, often after rain or uneven watering
Mature heads can split as inner leaves keep expanding, especially after a dry spell followed by heavy rain. Keep watering consistent and harvest firm heads promptly. A split will not close; harvest and use sound portions promptly, discarding any decayed tissue.
Stage 6
Harvest firm, well-filled heads
A cabbage head is made of tightly layered leaves. Squeeze gently to judge firmness rather than waiting for every plant to reach the same size. Mature heads left in the garden may split.
- Check: Feel for a solid head and check regularly near the variety’s expected maturity. Harvest before cracking.
- Cut: Use a clean knife to cut the stem beneath the head. Keep a few healthy wrapper leaves to protect it during handling.
- Cool: Move heads out of the sun and refrigerate promptly. Store whole, dry heads in a bag that retains moisture; check regularly and wash before use.
Choose with purpose
Find the right cabbage for your season
Compare maturity, head size, leaf texture, and kitchen use. Early types suit quick fresh harvests; later types may need more space and a longer season.
Questions gardeners ask
Cabbage growing FAQ
Quick answers for timing, planting, head formation, pests, splitting, and keeping your harvest.
When should cabbage be planted?
For spring, transplant sturdy plants about 2–3 weeks before the average last frost. For fall, count backward from cool harvest weather using the variety’s maturity and the time needed to raise transplants.
Is cabbage better direct sown or transplanted?
Both work, but transplants give more control over timing and stand establishment. Start seed indoors about 4–6 weeks before planting out and avoid holding seedlings too long.
How deep should cabbage seed be planted?
Sow 1/4–1/2 inch deep in sterile seed-starting mix or finely prepared soil. Keep evenly moist and move emerged seedlings into strong light.
How far apart should cabbage plants be spaced?
Space plants 15–18 inches apart with 30–36 inches between rows. Wider spacing generally supports larger heads and better airflow.
Does cabbage need full sun?
Yes. Give cabbage at least six hours of direct sun. In hot climates, light afternoon shade may reduce heat stress, but too much shade limits head size.
Should cabbage be grown under row cover?
Lightweight insect netting or row cover can exclude cabbage moths and flea beetles if installed immediately and sealed at the edges. Remove or vent heavy covers before they trap excess heat.
Why are worms eating my cabbage?
Imported cabbageworms and cabbage loopers are common brassica pests. Check leaf undersides and the crown often, handpick larvae, and use netting or a labeled biological control while larvae are small.
Why is my cabbage not forming a head?
Check the variety’s maturity first: outer leaves grow before the center fills. Crowding, insufficient sun, heat, dry soil, and poor nutrition can delay heading. Keep plants growing steadily and avoid removing healthy outer leaves.
Why did my cabbage split?
A mature head can crack when continued growth pushes the inner leaves outward. Sudden heavy watering after dry weather increases the risk. Maintain even moisture and harvest as soon as heads are firm.
How much water does cabbage need?
Provide about 1–2 inches per week, including rain, and keep moisture steady. Water at the soil line when practical to reduce leaf wetness and disease spread.
Should I expect more than one cabbage head?
Plan for one main head per plant. Some early varieties may make small secondary heads if the stump and lower leaves remain healthy, but their size and timing are variable. Do not rely on them for your main harvest.
How should harvested cabbage be stored?
Refrigerate sound, whole heads promptly, with a few wrapper leaves intact. Bag them to limit drying, check for decay, and wash just before preparation. Storage life varies greatly with variety and conditions; use early and damaged heads first.
Ready to plant?
Choose cabbage for your garden.
Compare maturity, head size, fresh eating and storage uses, organic options, and packet size.