Cabbage prefers cool weather, so plant it early enough to mature before summer heat arrives. Knowing exactly When To Plant Cabbage is the key to a crisp, sweet harvest instead of a bitter, bolted mess. This guide walks you through the timing for spring, fall, and even winter crops based on your climate zone.
You don’t need a green thumb to grow cabbage, but you do need to respect the calendar. Plant too late, and the heads split or taste like soap. Plant too early in cold soil, and seeds rot. Let’s get the timing right.
Understanding Cabbage Temperature Needs
Cabbage is a cool-season crop. It thrives when days are between 60°F and 70°F. It can handle light frosts, which actually sweeten the flavor. But once temperatures climb above 80°F for long stretches, cabbage gets stressed. It stops forming tight heads and may bolt (send up a flower stalk).
So your planting window is all about working backward from your average last frost date in spring and first frost date in fall.
Spring Planting Basics
For a spring harvest, you want cabbage to mature before summer heat peaks. That means starting seeds indoors 6 to 8 weeks before your last expected frost. Or direct-sow seeds 2 to 4 weeks before that last frost date.
- Start seeds indoors: 6–8 weeks before last frost
- Harden off seedlings: 1 week before transplanting
- Transplant outdoors: 2–4 weeks before last frost
- Direct sow: 2–4 weeks before last frost
Most cabbage varieties need 70 to 100 days from seed to harvest. Check your seed packet for exact days to maturity. Then count backward from your typical first hot day (over 85°F) to find your ideal planting date.
Fall Planting Basics
Fall cabbage is often sweeter and easier to grow because the weather cools as the heads form. For a fall harvest, plant seeds in midsummer. Count backward from your first fall frost date. You want cabbage to mature just before or after that frost, but not during the hottest part of summer.
- Direct sow: 10–12 weeks before first fall frost
- Transplant seedlings: 8–10 weeks before first fall frost
- Harvest after a light frost for sweeter flavor
Fall cabbage can handle light freezes. Some varieties even improve in taste after a frost. Just don’t let them get buried in heavy snow or hard freeze for days.
When To Plant Cabbage By Climate Zone
Your local climate is the biggest factor. Here’s a breakdown by USDA hardiness zones. If you don’t know your zone, check online with your zip code.
Zone 3–4 (Cold Northern Climates)
Short growing season. Spring planting is tight. Start seeds indoors in late March or early April. Transplant outdoors in mid-May after soil warms to at least 45°F. For fall, direct sow in early July. Harvest before hard freeze in September or October.
- Indoor start: March 20–April 10
- Transplant: May 10–May 25
- Fall direct sow: July 1–July 15
Zone 5–6 (Moderate Climates)
Good balance. Spring planting: start indoors in early March. Transplant in early April. Direct sow in late March. Fall planting: direct sow in late July or early August. Harvest in October or November.
- Indoor start: March 1–March 15
- Transplant: April 1–April 15
- Fall direct sow: July 20–August 5
Zone 7–8 (Warm Climates)
Hot summers limit spring cabbage. Plant early. Start indoors in January or February. Transplant in March. For fall, wait until August or September. Cabbage can overwinter in mild winters with protection.
- Indoor start: January 15–February 15
- Transplant: March 1–March 20
- Fall direct sow: August 15–September 15
Zone 9–10 (Hot Climates)
Spring cabbage is risky. Focus on fall and winter. Start seeds indoors in September or October. Transplant in November. Harvest from January through March. Use shade cloth if needed.
- Indoor start: September 1–October 1
- Transplant: October 15–November 15
- Winter harvest: January–March
How To Calculate Your Exact Planting Date
Don’t rely on guesswork. Use this simple formula:
- Find your average last spring frost date (check local extension office or almanac).
- Find your average first fall frost date.
- Check seed packet for days to maturity (DTM).
- For spring: Count backward from your last frost date plus 2 weeks (to allow for cool weather). Example: DTM 80 days. Last frost April 15. Count back 80 days from May 1 = February 10 (indoor start).
- For fall: Count backward from first frost date plus 2 weeks. Example: DTM 80 days. First frost October 15. Count back 80 days from October 1 = July 13 (direct sow).
Always add a buffer of 10–14 days for unexpected cold snaps or slow germination.
Using Soil Temperature
Cabbage seeds germinate best when soil is between 45°F and 85°F. Optimal is 70°F. If soil is too cold (below 40°F), seeds rot. Too hot (above 85°F), germination drops. Use a soil thermometer to check.
- Minimum soil temp: 40°F
- Optimal soil temp: 70°F
- Maximum soil temp: 85°F
For transplants, soil should be at least 50°F at planting depth. Cold soil stunts growth and invites disease.
Step-By-Step Planting Guide
Starting Seeds Indoors
- Fill seed trays with moist seed-starting mix.
- Sow seeds ¼ inch deep.
- Cover lightly with mix or vermiculite.
- Water gently from bottom or with a spray bottle.
- Place in a warm spot (65–70°F) until germination (5–10 days).
- Once sprouts appear, move to bright light or grow lights.
- Keep soil moist but not soggy.
- Thin to one seedling per cell after true leaves appear.
- Harden off seedlings 7–10 days before transplanting.
Direct Sowing Outdoors
- Prepare soil: rich, well-draining, pH 6.0–7.5.
- Add compost or balanced fertilizer.
- Sow seeds ½ inch deep, 12–18 inches apart in rows 24–36 inches apart.
- Water well after planting.
- Thin seedlings to 12–18 inches apart when they have 4 true leaves.
- Mulch to retain moisture and keep soil cool.
Transplanting Seedlings
- Harden off seedlings by exposing them to outdoor conditions gradually over a week.
- Dig holes 12–18 inches apart.
- Set seedlings slightly deeper than they were in pots.
- Water thoroughly after transplanting.
- Use row covers if frost is forecast.
Common Timing Mistakes
Even experienced gardeners slip up. Here are the biggest errors:
- Planting too late in spring: Heads form in hot weather, leading to bitterness and bolting.
- Planting too early in cold soil: Seeds rot or seedlings get stunted.
- Ignoring microclimates: Your garden may be warmer or colder than the general zone.
- Not accounting for variety: Early varieties (60 days) vs. late varieties (100 days) need different timing.
- Skipping fall planting: Many gardeners only think spring, but fall cabbage is often better.
Best Cabbage Varieties For Different Seasons
Choosing the right variety makes timing easier. Here are some top picks:
Early Spring Varieties (50–70 Days)
- ‘Golden Acre’ – 65 days, compact heads
- ‘Early Jersey Wakefield’ – 65 days, pointed heads
- ‘Stonehead’ – 70 days, very early
Mid-Season Varieties (70–85 Days)
- ‘Red Acre’ – 75 days, red cabbage
- ‘Savoy King’ – 80 days, crinkled leaves
- ‘Danish Ballhead’ – 85 days, stores well
Late Season / Fall Varieties (85–110 Days)
- ‘Brunswick’ – 90 days, cold tolerant
- ‘January King’ – 100 days, very hardy
- ‘Late Flat Dutch’ – 105 days, huge heads
Extending The Harvest Season
You can enjoy cabbage for months with succession planting. Sow a new batch every 2–3 weeks during your planting window. For spring, start indoors and direct sow at the same time. For fall, stagger sowings from mid-summer to early fall.
Also, some varieties store well in a root cellar or refrigerator for months. ‘Danish Ballhead’ and ‘Late Flat Dutch’ are excellent keepers.
Using Row Covers
Floating row covers protect young plants from frost and pests. They can extend your spring planting by 2 weeks and your fall harvest by 3 weeks. Just remove them when temperatures exceed 80°F to avoid overheating.
Frequently Asked Questions
What month is best to plant cabbage?
It depends on your zone. In general, spring cabbage is planted 2–4 weeks before the last frost (March–April in many areas). Fall cabbage is planted 10–12 weeks before the first frost (July–August).
Can I plant cabbage in summer?
Only if you live in a cool coastal area or high elevation. Most regions are too hot. Focus on spring and fall instead.
How late can I plant cabbage for fall harvest?
You can plant up to 8 weeks before your first expected frost. But earlier is better for head development. Late plantings may produce small or loose heads.
Should I start cabbage indoors or direct sow?
Indoor starts give you a head start and better control over germination. Direct sowing is simpler but riskier in cold or hot soil. For spring, indoor starts are recommended. For fall, direct sowing works well.
What happens if I plant cabbage too late?
Heads may be small, loose, or bitter. The plant may bolt (flower) instead of forming a head. You’ll get a poor harvest.
Final Tips For Success
Timing is everything, but soil prep and care matter too. Cabbage needs consistent moisture—about 1–1.5 inches of water per week. Mulch helps keep soil cool and moist. Fertilize with a nitrogen-rich feed when heads start forming.
Watch for pests like cabbage worms and aphids. Use row covers or insecticidal soap. Rotate crops to avoid soil-borne diseases.
Harvest when heads feel firm and solid. Cut at the base with a knife. Leave the outer leaves and root in the ground—sometimes a second crop of small heads forms.
Remember: cool weather is your friend. Plan around it, and you’ll have crisp, sweet cabbage from spring through fall.