Red Acre cabbage needs a cool growing window and uninterrupted growth to build a firm head. Its purple-red leaves add color to the vegetable bed, but the same practical cabbage rules still apply: start on time, protect the growing center, keep moisture steady and harvest when the head is firm.
Planting at a glance
- Crop
- Red Acre heading cabbage
- Sowing depth
- ¼ inch
- Start indoors
- About 4–6 weeks before transplanting
- Spacing
- 12–18 inches; 18 inches gives more room
- Light
- Full sun
- Harvest estimate
- About 70–75 days from transplant
Use local frost dates and growing conditions to adjust planting and harvest timing.
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Schedule for cool weather
For a spring crop, start seedlings indoors early enough that plants can make heads before sustained summer heat. For a fall crop, count backward from your local harvest window, adding seedling time to the product's seventy-to-seventy-five-day transplant estimate. Fall growth slows as days shorten, so leave extra room in the schedule.
There is no single national cabbage planting month. Northern gardens and mild-winter regions use different calendars. Ask your local extension planting guide which cool-season window fits your climate. A late start cannot always be repaired with extra fertilizer or water.
Raise compact seedlings
Sow around a quarter inch deep in a clean seed-starting mix. Keep moist and provide bright light as soon as seedlings emerge. Normal moderate indoor temperatures are suitable; cabbage does not need the very warm germination setup used for peppers.
Thin to one strong seedling per cell and pot up if roots fill the cell before outdoor conditions are suitable. Avoid holding old, stressed plants in tiny cells. Healthy compact seedlings with several true leaves are easier to establish than tall, pale seedlings. Record sowing and transplant dates separately.
For tray setup and early seedling care, see our seed-starting guide for beginners.
Transplant with the center intact
Harden seedlings gradually, exposing them to increasing outdoor sun and wind. Young plants need protection from severe cold even though established cabbage can tolerate cool conditions. Set them at their original depth in well-drained, moisture-retentive soil and water thoroughly.
Space Red Acre about twelve to eighteen inches apart, using the wider end when room allows. Give rows enough access to inspect leaf undersides and cut heads later. Handle plants gently so the central growing point is not crushed. Damage there can prevent a normal head from forming.
Keep water and fertility consistent
Cabbage needs steady growth. Use a soil test to guide fertilizer, and improve poor soil with finished compost where appropriate. Avoid fresh manure around a crop intended for food. Additional feed may be needed as plants grow, but follow local recommendations and the product label rather than applying repeatedly by habit.
Water deeply when the root zone starts to dry, aiming for even moisture through the bed. Mulch around established plants to reduce drying and weeds without piling material into the center. Drought followed by a large rain can stress the crop and contribute to splitting near maturity.
Protect leaves before pests get established
Inspect plants frequently for small holes, eggs and caterpillars, especially beneath leaves and near the growing center. Insect netting installed early can exclude many flying pests if its edges are secure and no pests are trapped inside. Cabbage grown for heads does not need pollination, so insect protection can remain during head development if temperatures stay appropriate.
Hand-remove caterpillars when practical and identify them before selecting a treatment. Use only products labeled for the crop and problem, following harvest intervals. Netting does not cure pests already in the soil, so combine it with observation and a clean planting site.
Harvest by firmness, not color alone
Red Acre naturally develops purple-red heads, but color does not tell you whether they are ready. Feel the head gently: harvest when it has filled out and is firm at a usable size. Cut with a clean knife, preserving a few protective outer leaves on the harvested head.
Do not wait indefinitely for a larger head once it is firm. Mature heads can split, especially after heavy rain. Use damaged or split heads promptly if sound, trimming affected tissue as appropriate. Store healthy heads cold and humid, and use tested food-preservation directions if fermenting or canning.
Containers and failure to head
A large container with drainage can grow one cabbage, but it needs room for both the root system and broad outer leaves. A pot around five gallons or larger is a practical starting point, with larger volumes providing steadier moisture. Place it in full sun and check water frequently.
If plants make loose leaves without a head, consider planting time, heat, crowding, interrupted growth and damage to the center. Do not strip off healthy outer leaves to force heading; they feed the plant. Rotate away from recent cabbage-family plantings where possible, and get a diagnosis for persistent root swelling, wilt or leaf disease.
For help choosing a suitable mix, read our guide to soil for container gardening.
Growing questions
Can I remove the big outer leaves?
Leave healthy outer leaves in place while the head develops. They help supply the plant with energy.
Why did my cabbage split?
A mature head can split, especially after a sudden increase in water. Harvest firm heads promptly rather than holding them indefinitely.
Does cabbage need pollination to make a head?
No. The head is leafy growth, so insect netting can be used without allowing flower pollination.
Ready for another planting? See Red Acre Cabbage Seeds for the current packet options.
Sources and photo credits
Prepared with AI assistance using Gardeners Basics product information and horticultural references. This guide does not describe a Gardeners Basics growing trial. Research and license links open in a new tab.
Growing references
Photo credits
Photographs illustrate the crop or growing stage. They are not photographs of a Gardeners Basics growing trial; a specific cultivar is identified only where the source documents it.
- Cover: red cabbage head, Stickpen. Public domain, released by copyright holder. Resized for display. The Pinterest graphic crops the cover photograph; its photo retains the stated license.
- Article photo 1: Kalibos Cabbage (My garden 2024 ^14) - Flickr - docoverachiever.jpg, Sheila Sund from Salem, United States. CC BY 2.0. Resized for display. The Pinterest graphic crops the cover photograph; its photo retains the stated license.
