How to Transplant Cabbage
One of the hardiest vegetables - cabbage thrives in cold weather, improves with frost, and stores for months
Quick Reference
Understanding Cabbage's Cold-Hardy Nature
Why Cabbage Loves Cold Weather
Cabbage is among the most cold-tolerant vegetables you can grow. As a member of the Brassica family, it evolved in cool European climates and thrives in conditions that would kill or damage most other vegetables. This cold-hardiness makes cabbage invaluable for extending your growing season into late fall and early winter.
Temperature Tolerance
- • Optimal growth: 60-65°F (16-18°C)
- • Survives frost: Down to 26°F (-3°C) easily
- • Established plants: Can handle 20°F (-7°C)
- • Flavor improves: After frost exposure
- • Heat stress: Begins above 80°F (27°C)
What Frost Does to Cabbage
- • Converts starches to natural sugars
- • Produces sweeter, more flavorful heads
- • Triggers winter-storage compounds
- • Tightens head structure
- • Improves storage longevity
This makes cabbage one of the first vegetables you can transplant in spring and one of the last to harvest in fall. Fall-harvested cabbage exposed to frost stores significantly longer than cabbage grown entirely in warm weather.
When to Transplant Cabbage
Spring PlantingEarly Crop
Transplant 2-4 weeks before your last expected frost. Cabbage grows best in cool weather (60-65°F) and must mature before summer heat arrives. Start seeds indoors 6-8 weeks before your transplant date.
Spring cabbage faces a race against rising temperatures. Early varieties (70-80 days) are better for spring planting than large storage varieties (90-100 days). The goal is to harvest before prolonged heat causes loose heads, bolting, or splitting.
Fall PlantingStorage Crop
For fall harvest and winter storage, transplant 10-12 weeks before your first expected frost. Fall cabbage stores better and has superior flavor - cool weather and frost concentrate sugars and develop the complex flavors that make fresh garden cabbage so much better than store-bought.
The challenge is starting seeds in summer heat. Start seeds indoors with air conditioning, or in a shaded outdoor location. Keep seedlings well-watered and transplant in late afternoon or on cloudy days to reduce heat stress.
Seedling Readiness Signs
Transplant when seedlings have 4-6 true leaves and are 4-6 inches tall. Stems should be sturdy and stocky, not spindly or leggy. The ideal cabbage seedling has:
- • Dark blue-green leaves (healthy color for brassicas)
- • Sturdy, stocky stem about pencil-thickness
- • Root system that holds the soil plug together
- • No signs of yellowing, disease, or pest damage
- • Has been hardened off for 7-10 days
Transplanting Timeline by USDA Zone
| Zone | Spring Transplant | Fall Transplant | Notes |
|---|---|---|---|
| 3-4 | May 1-15 | July 1-15 | Short season; choose early varieties |
| 5 | April 15-30 | July 15-Aug 1 | Both seasons work well |
| 6 | April 1-15 | Aug 1-15 | Excellent for storage varieties |
| 7 | March 15-30 | Aug 15-Sep 1 | Can overwinter some varieties |
| 8 | Feb 15-Mar 15 | Sep 1-Oct 1 | Fall/winter crop often best |
| 9-10 | Jan-Feb (if cool) | Oct-Nov | Grow as winter crop; too hot for summer |
These dates are starting points. Adjust based on your specific microclimate, elevation, and local weather patterns. Early varieties can be transplanted closer to frost dates; late storage varieties need more time to mature.
Cabbage Types and Their Differences
| Type | Popular Varieties | Days | Notes |
|---|---|---|---|
| Green Cabbage | Golden Acre, Copenhagen Market, Brunswick | 70-100 | Most common; versatile for cooking and storage |
| Red/Purple Cabbage | Red Acre, Ruby Ball, Mammoth Red Rock | 75-95 | Higher in antioxidants; excellent for salads |
| Savoy Cabbage | Savoy King, Alcosa, Deadon | 80-90 | Crinkled leaves; best flavor for cooked dishes |
| Napa/Chinese Cabbage | Minuet, Blues, Bilko | 45-70 | Milder flavor; bolts easily in heat |
| Mini/Baby Cabbage | Gonzales, Caraflex, Katarina | 55-70 | Perfect for small gardens and containers |
Napa cabbage is more sensitive to heat and bolts more easily than heading types. For beginners, green cabbage varieties like 'Golden Acre' or 'Gonzales' are the most forgiving.
Planting Depth and Technique
Like broccoli, cabbage benefits from slightly deeper planting. This creates a sturdier plant that can support the heavy head as it develops without toppling over.
Prepare a deep hole
Dig deep enough to bury the stem up to the first true leaves - typically 2-4 inches deeper than the root ball. Mix compost into the planting hole for extra nutrition.
Remove lower leaves
Strip off leaves that will be buried. The bare stem will develop additional roots, creating a sturdier plant better able to anchor the heavy head.
Plant to first true leaves
Set the plant so soil reaches the first set of true leaves. Deep planting helps anchor the heavy head as it develops. This is especially important for large-headed varieties.
Create a slight depression
Leave a shallow basin around the plant to hold water. This helps direct moisture to the roots during establishment. Cabbage needs consistent moisture to form solid heads.
Water thoroughly and mulch
Water deeply to settle soil around roots. Apply 2-3 inches of organic mulch to retain moisture and keep roots cool, but keep mulch 1-2 inches away from the stem to prevent rot.
Spacing Requirements
Standard/Large Cabbage
- • In rows: 18-24 inches apart
- • Between rows: 24-36 inches
- • Square foot garden: 1 per square foot
- • Large varieties: 24 inches apart minimum
Spacing affects head size. Wider spacing produces larger heads; closer spacing produces smaller but more heads per area.
Mini/Compact Varieties
- • In rows: 12-15 inches apart
- • Between rows: 18-24 inches
- • Containers: One per 5-gallon pot
- • Intensive beds: 12 inches apart
Mini varieties like 'Gonzales' produce personal-sized heads perfect for small families and are ideal for containers.
The Relationship Between Spacing and Head Size
Cabbage head size is directly influenced by spacing. Closer spacing produces smaller heads (2-3 lbs) while wider spacing allows heads to reach full potential (6-8+ lbs for large varieties). Choose your spacing based on how you plan to use the harvest - smaller heads are often more practical for fresh eating, while larger heads are better for sauerkraut, coleslaw, and large-batch cooking.
14-Day Hardening Off Schedule
Cabbage is cold-tolerant but benefits from gradual outdoor exposure to wind and sun. The goal is to toughen the leaves and stems so they can handle real-world growing conditions without triggering stress responses like bolting.
| Day | Time Outside | Conditions | Notes |
|---|---|---|---|
| Days 1-2 | 2-3 hours | Full shade, wind-protected, above 32°F | Watch for wilting; bring in immediately if stressed |
| Days 3-4 | 4-5 hours | Morning sun, gentle breeze OK, above 30°F | Start sun exposure gradually |
| Days 5-6 | 6-8 hours | Increasing sun, can handle breezes | Leave in filtered afternoon sun |
| Days 7-8 | 10-12 hours | Full sun exposure, all weather | Only protect from hard frost (below 26°F) |
| Days 9-10 | Full day | Full conditions, overnight if above 28°F | Should look sturdy and acclimated |
| Days 11-14 | 24 hours | Leave out completely | Ready to transplant - no stress visible |
Cabbage hardens off quickly in cool weather. The main goals are wind tolerance and sun exposure - cold is rarely a problem for this tough crop. If temperatures are unseasonably warm during hardening off, provide afternoon shade to prevent heat stress.
Hardening Off Fall Transplants
When starting cabbage in summer heat for fall planting, focus on heat tolerance rather than cold. Protect seedlings from intense afternoon sun and gradually introduce them to outdoor conditions. Start in a shaded area and increase sun exposure slowly over 10-14 days. Heat stress during hardening off can trigger bolting later.
Transplant Shock Prevention
While cabbage is tough and cold-hardy, transplant shock can still affect head formation. Use these techniques to minimize stress and ensure quick establishment.
Water thoroughly before transplanting
Water seedlings 2-4 hours before transplanting. Moist root balls transplant better and slide out of pots more easily without root damage.
Choose ideal weather
Transplant on cloudy days or in late afternoon. Cabbage handles cold but not heat stress - avoid transplanting during warm spells.
Handle by root ball
Never grab stems - this damages tissues. Support the root ball from beneath when removing from pots and placing in holes.
Pre-water planting holes
Fill holes with water and let drain before planting. This ensures moisture is where roots need it most - at the bottom of the root zone.
Firm soil gently
Press soil around roots to eliminate air pockets, but don't compact excessively. Good soil-to-root contact is essential for water uptake.
Apply mulch immediately
Mulch retains soil moisture and keeps roots cool. This is especially critical for fall transplants going into warm soil.
Install cutworm collars
Cutworms are devastating to young cabbage. Place collars around stems at planting time - prevention is far easier than replacement.
Delay fertilizing
Wait 2-3 weeks before fertilizing. Stressed roots can't absorb nutrients effectively, and fertilizer salts can cause additional stress.
First Week Care Checklist
The first week after transplanting sets the stage for the entire season. Follow this day-by-day guide for best results.
Transplant & water deeply
Plant to first true leaves, water thoroughly, create basin around plant
Check moisture & install protection
Water if soil dry, install row covers or cutworm collars
Monitor for stress
Some wilting normal; water if needed but don't overwater
Watch for pest damage
Check for cutworm damage (stems cut at soil), flea beetles (tiny holes)
Look for recovery signs
Plants should perk up; new growth at center indicates establishment
Warning Signs During First Week
- • Stems cut at soil level: Cutworm damage - check at night with flashlight
- • Wilting that doesn't recover overnight: Root damage or disease
- • Yellow leaves spreading rapidly: Overwatering or root problems
- • Holes in leaves: Flea beetles or cabbage worms - install row covers
- • Purple-tinged leaves: Phosphorus deficiency from cold soil - usually resolves as soil warms
Weather Considerations
When TO Transplant
- • Overcast days - Reduced stress, ideal conditions
- • Cool temperatures - 45-65°F (7-18°C) is perfect
- • Light rain expected - Natural watering aids establishment
- • Evening/late afternoon - Plants recover overnight
- • Before a cooling trend - Cabbage thrives in cool weather
- • Calm conditions - Light breeze OK, avoid windy days
- • Light frost expected - Won't hurt established transplants
When NOT to Transplant
- • Hot, sunny midday - Heat stress damages transplants
- • Temperatures above 80°F - Wait for cooler weather
- • Strong winds - Desiccates leaves and rocks transplants
- • Hard frost expected - Below 20°F damages young transplants
- • Heavy rain - Compacts soil and damages seedlings
- • Before a heat wave - Heat stress triggers bolting or poor heads
- • Waterlogged soil - Wait for drainage, promotes rot
Planning Around Weather
Spring Planting Strategy
Watch for a window of stable, cool weather. Light frost won't hurt hardened transplants. The bigger risk is transplanting too late and having heads mature during summer heat, which causes loose heads, splitting, or bolting.
Fall Planting Strategy
Wait for temperatures to moderate below 85°F before transplanting. Provide extra water and shade during establishment. Fall cabbage matures as temperatures drop, producing the best quality heads. Frost improves flavor.
Container vs. Ground Growing
Container Growing
Cabbage grows well in containers, making it accessible for balcony and patio gardeners. Key considerations:
- • Container size: Minimum 5 gallons (7-10 gallons ideal)
- • Soil: Quality potting mix with added compost
- • Drainage: Essential - ensure holes aren't blocked
- • Watering: More frequent than in-ground (check daily)
- • Fertilizing: Regular feeding - nutrients wash out faster
- • Variety choice: Mini varieties like 'Gonzales' are ideal
Container cabbage often produces smaller heads but is easier to protect from pests and can be moved for optimal sun/temperature.
In-Ground Growing
In-ground growing allows full root development and typically produces the largest heads. Key considerations:
- • Soil prep: Add 2-4 inches of compost before planting
- • pH: Maintain 6.5-7.0 to discourage clubroot
- • Drainage: Cabbage tolerates heavier soil than many vegetables
- • Rotation: Don't plant where brassicas grew for 4+ years
- • Spacing: Full spacing allows largest heads
- • Mulching: 2-3 inches keeps roots cool and moist
In-ground cabbage requires less frequent watering but more attention to crop rotation and soil-borne disease prevention.
Raised Beds: Best of Both Worlds
Raised beds offer excellent drainage, easy soil amendment, and reduced soil-borne disease pressure. They warm up faster in spring (helpful for early transplants) and are easier to cover with row covers for pest protection. Use at least 12 inches of depth for adequate root development.
Recovery Timeline After Transplanting
Understanding the typical recovery timeline helps you know what's normal and when to intervene.
Days
Initial Adjustment
Outer leaves may wilt during the day, especially in sun. This is normal - roots aren't yet drawing water efficiently. Plants should perk up overnight. Some yellowing of lower leaves is acceptable.
Days
Root Establishment
Plants should look perkier and recover from midday wilting faster. Growth appears to stop as energy goes to root development. This is normal and temporary.
Days
Active Growth Resumes
New growth visible at the center of the plant signals successful establishment. Existing leaves look darker and healthier. Plants handle weather stress better. Ready for first fertilizing.
Days
Vegetative Growth Phase
Rapid leaf expansion begins. Large outer wrapper leaves develop that will later protect and feed the developing head. Plants are fully established and growing vigorously.
When Recovery Isn't Happening
Seek intervention if: plants still wilt despite moist soil after 5+ days, leaves turn completely yellow or fall off, stems appear shriveled or discolored, or plant topples over easily (cutworm damage). These indicate more serious problems than normal transplant shock.
Preventing Common Problems
Preventing Head Splitting
Splitting occurs when internal growth outpaces the outer leaves' ability to stretch. This typically happens after heavy rain or irrigation following a dry spell, especially when heads are nearly mature.
- • Primary prevention: Maintain consistent soil moisture throughout the season
- • Use mulch: Helps regulate soil moisture and prevents extremes
- • Watch mature heads: Harvest promptly when heads are firm
- • Emergency measure: If rain threatens mature heads, twist the plant to break some roots
- • Don't overwater: Especially as heads approach maturity
Preventing Bolting
Bolting (flowering without forming a head) is triggered by prolonged cold exposure followed by warming temperatures. Young plants exposed to temperatures below 50°F for several weeks are especially vulnerable.
- • Use appropriate transplants: Not too young (cold damage) or too old (stressed)
- • Protect from cold snaps: Cover young transplants if extended cold is forecast
- • Time planting correctly: Don't transplant too early in spring
- • Avoid root-bound plants: Stressed seedlings are more prone to bolting
- • Choose bolt-resistant varieties: For spring planting in variable climates
Preventing Clubroot Disease
Clubroot is a soil-borne disease that causes swollen, distorted roots and stunted growth. Once established, it persists in soil for 10+ years. Prevention is far easier than cure.
- • Raise soil pH: Clubroot thrives in acidic soil; maintain pH 7.0-7.2
- • Improve drainage: Disease spreads in wet, waterlogged soils
- • Rotate crops: Don't plant brassicas in the same spot for 4+ years
- • Buy clean transplants: Or start your own in sterile potting mix
- • Clean tools: Contaminated soil spreads the disease
Common Cabbage Transplanting Mistakes
- • Transplanting too late in spring - Spring cabbage must mature before heat causes loose heads or splitting
- • Inconsistent watering - Causes splitting, poor head formation, or bitter flavor
- • Not planting deep enough - Top-heavy heads can topple over; deep planting provides stability
- • Crowding plants - Results in small, loose heads and increased disease pressure
- • Ignoring pests early - Cabbage worms devastate plants quickly; install row covers immediately
- • Planting in hot weather - Causes bolting, poor head formation, and bitter flavor
- • Using old or stressed transplants - Root-bound or yellowing seedlings produce poor heads
- • Forgetting about crop rotation - Plants brassicas in same spot, leading to disease buildup
Post-Transplant Care
Watering
Cabbage needs 1-1.5 inches of water per week. Consistent moisture is critical to prevent splitting and ensure solid head formation. Water alternating between drought and heavy can cause heads to crack.
Water deeply at the base of plants rather than overhead. Wet leaves promote disease. Check soil moisture by inserting your finger 2 inches deep - water when dry at this depth.
Mulching
Apply 2-3 inches of organic mulch to retain moisture and keep roots cool. This is especially important in spring to extend the growing season before summer heat arrives.
Good mulch options include straw, shredded leaves, or grass clippings. Keep mulch 1-2 inches away from stems to prevent rot. Refresh mulch as it decomposes throughout the season.
Pest Protection
Cover plants with row covers immediately to exclude cabbage worms, cabbage loopers, and aphids. Check plants weekly - even under covers, some pests may appear.
If pests get through, hand-pick caterpillars or use Bt (Bacillus thuringiensis) spray. Encourage beneficial insects like parasitic wasps that prey on cabbage pests.
Fertilizing
Cabbage is a heavy feeder. Side-dress with nitrogen fertilizer or compost 3-4 weeks after transplanting. A second feeding when heads begin to form encourages large, tight heads.
Use a balanced fertilizer initially, then switch to higher nitrogen as heads form. Avoid fertilizing within 2-3 weeks of harvest, which can cause heads to grow too fast and split.
Harvesting and Storage
When to Harvest
- • Timing: 70-100 days after transplanting (varies by variety)
- • Test firmness: Squeeze gently - ready when head feels solid
- • Check size: Most varieties reach 6-8 inches diameter when ready
- • Watch outer leaves: If pulling away from head, harvest soon
- • Don't wait too long: Over-mature heads may split
Storage Tips
- • Refrigerator: 2-3 months in crisper drawer
- • Root cellar: 3-6 months at 32-40°F, high humidity
- • Keep outer leaves: They protect the head during storage
- • Don't wash: Until ready to use; moisture promotes rot
- • Check regularly: Remove any that show decay
Getting a Second Harvest
After harvesting the main head, leave the stem and roots in the ground. Make a shallow X-shaped cut in the top of the remaining stem. The plant will often produce 3-4 small secondary heads from this cut, extending your harvest by several weeks.
Frequently Asked Questions
When should I transplant cabbage outdoors?
Transplant cabbage 2-4 weeks before your last frost date for spring crops. Cabbage is very cold-hardy and can handle temperatures down to 20°F (-7°C) when established. For fall crops, transplant 10-12 weeks before first frost to allow heads to mature before hard freezes.
How deep should I plant cabbage seedlings?
Plant cabbage slightly deeper than it was growing in the container - up to the first set of true leaves. Like broccoli, cabbage benefits from deep planting which creates a sturdier stem and helps anchor the developing head. This prevents the plant from toppling as the head gains weight.
Why is my cabbage splitting?
Cabbage heads split when they receive too much water after a dry period, especially when heads are mature. The inner leaves expand faster than the outer leaves can stretch, causing splits. Consistent watering throughout the season prevents splitting. You can also twist the plant slightly to break some roots, slowing growth.
Can cabbage survive hard frost?
Yes! Established cabbage can survive temperatures down to 20°F (-7°C). Light frost (28-32°F) actually improves flavor by converting starches to sugars, making heads sweeter. Young transplants need protection until they're established, but mature plants are remarkably cold-hardy.
What causes cabbage to bolt instead of forming heads?
Cabbage bolts (flowers without forming a proper head) when exposed to several weeks of temperatures below 50°F followed by warm weather, or when transplants are too old and root-bound. Using fresh, properly-aged transplants and avoiding exposure to prolonged cold snaps during early growth prevents bolting.
How do I know when cabbage is ready to harvest?
Harvest cabbage when heads are firm and solid when squeezed. The head should feel dense with no give. Depending on variety, this takes 70-100 days from transplanting. Don't wait for maximum size if you see the outer leaves starting to pull away from the head - this indicates the head is reaching its limit.
Should I remove the outer leaves from cabbage after transplanting?
Don't remove healthy outer leaves - they provide energy through photosynthesis and protect the developing head. Only remove leaves that are yellow, diseased, or touching the soil. The large outer leaves are the 'factory' that produces the energy to grow a large, dense head.
Can I grow cabbage in containers?
Yes, but choose compact varieties and use containers at least 5 gallons (ideally 7-10 gallons) per plant. Cabbage has extensive root systems and needs consistent moisture. Container-grown cabbage may produce smaller heads, but mini varieties like 'Gonzales' are perfect for container growing.
How long does cabbage transplant shock last?
Cabbage typically recovers from transplant shock within 7-10 days. During this time, outer leaves may wilt during the heat of the day and growth appears to stop. Signs of recovery include perking up overnight, new growth at the center, and leaves regaining their blue-green color. If shock persists beyond 2 weeks, check for root damage, overwatering, or pest issues.
What's the best time of day to transplant cabbage?
Late afternoon or evening is ideal, giving plants overnight to recover before facing sun exposure. Cloudy days are also excellent. Avoid transplanting during midday heat or on windy days. If you must transplant in full sun, provide temporary shade with row cover for the first 2-3 days.
How do I prevent cutworms from killing my cabbage transplants?
Cutworms are nocturnal caterpillars that chew through stems at soil level. Create protective collars from cardboard toilet paper rolls, plastic cups with bottoms removed, or aluminum foil wrapped around stems. Push collars 1 inch into soil and leave 2 inches above. Remove collars after 2-3 weeks when stems toughen.
Can I transplant cabbage that has started to bolt?
Once cabbage has begun bolting, it's too late - the plant has committed to flowering rather than heading. Bolting starts before you can see flowers, triggered by stress or temperature signals. Prevent bolting by using young, healthy transplants and avoiding temperature extremes during early growth.