Growing Cabbage

Brassica sp. : Brassicaceae / the mustard or cabbage family

Jan F M A M J J A S O N Dec
    S     S S S        
      T     T T T      
      P     P P P      

(Best months for growing Cabbage in USA - Zone 5a regions)

  • S = Plant undercover in seed trays
  • T = Plant out (transplant) seedlings
  • P = Sow seed
  • Easy to grow. Grow in seed trays, and plant out in 4 weeks. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 41°F and 64°F. (Show °C/cm)
  • Space plants: 20 - 30 inches apart
  • Harvest in 11-15 weeks.
  • Compatible with (can grow beside): Dwarf (bush) beans, beets, celery, cucumber, onions, marigold, nasturtium, rhubarb, aromatic herbs (sage, dill, chamomile, thyme)
  • Avoid growing close to: Climbing (pole) beans, tomato, peppers (chili, capsicum), eggplant (aubergine), strawberry, mustard, parsnip

Your comments and tips

10 Feb 24, ER (USA - Zone 7b climate)
What does plant seeds "undercover" mean?
15 Feb 24, Liz (Gardenate) (New Zealand - sub-tropical climate)
Young seedlings can be affected by sudden changes of temperature. To prevent this seedtrays are usually kept under cover for a few weeks. Any area which mantains even, frost-free, temperatures 24 hours will do. e.g. Unheated greenhouses, a covered area close to the house, or small frames covered with frostcloth or with a piece of fabric like old bed sheets. If possible put the trays above ground level. Too much strong sunlight can do as much damage as cold nights to seedlings.
14 Feb 24, Domanique (Canada - Zone 5b Temperate Warm Summer climate)
Plant undercover in seed trays (with a dome or other thing like that)
26 Nov 23, (New Zealand - temperate climate)
Are there recommendations for sowing cabbage seeds that are tolerant of hot days (17 to 21 deg C and cooler nights 6 to 10 deg C as experienced in the central N.I. I do OK with shop bought punnets in early spring and mid to late autumn, but have no luck with sucessional planting in late spring through summer and early autumn.
14 Dec 23, (New Zealand - sub-tropical climate)
Cabbage are a cool weather crop not a hot weather crop.
26 Jun 23, (USA - Zone 6b climate)
When is it best to plant cabbages and kale in zones 6b and 7a? And bok choy in these same zones?
28 Jun 23, (USA - Zone 6b climate)
In zone 6 sow Bok Choy seeds in April, Kale seeds in July and August, and Cabbage seeds in April, July, or August. For zone 7a, Cabbage seeds are best sown in January, February, March, August, or September, while Kale seeds thrive when sown in February, March, or August. Bok choy seeds should be sown in August or September for optimal growth.
16 Jun 23, Lesley (Australia - tropical climate)
Something bigger than caterpillars eating my seedlings no evidence of caterpillars start with nipping tops off beans cabbage cauli etc only things they don’t eat is silverbeet and pumpkin last year it ate all flowers on paw paw tree sick of replacing veg
24 Jun 23, (Australia - sub-tropical climate)
If you have a fencing company near you, go and see if they have mess off cuts (approx 6-8' x 4-5') . Make frames in a u shape and put insect mess over it.
01 May 23, Barb (Australia - sub-tropical climate)
Growing yellow ( butter ) string less beans. Grow to 60 cm tall . Ate they Ok to grow in same tub as brassikas?? Advice says bush beans ok , pole beans not....I'm confused.
Showing 11 - 20 of 233 comments

Are you direct sowing (into the garden), or are you sowing indoors in trays? I'll give you the germination temperatures. Germination temperatures vary from plant to plant (even among say tomatoes - the various varieties have different germination temperatures). These are OPTIMAL germination temperatures-- so higher or lower can work, but germination will not be as consistent or Good in non-optimal temps. The germination temperature must be sustained (over several days or more) -- this is the plant's indicator (sustained warm temperature), that spring/summer is here -- and it is time to wake up and get growing. If the germination temperatures are not met, the seeds will remain dormant (most of them), waiting for their ideal growing conditions to occur. Remember - varieties make a difference so I'm giving you GENERAL temperatures. PEPPERS: Soil temperature needs to be at least 75-85 degrees F (24-27 c) for good germination. Peppers won’t germinate in cold soil– with the higher end temps germination may be in 5 days, or may take up to 20 days in the lower temps. Don’t overwater seeds or they may rot. peppers don't like to be overly wet. Your max germination temp is 95F (35c) for peppers. TOMATO : optimum germination temps are : 65-85F (24-30c) days to germinate varies a lot by variety ... so maybe 1- 2 weeks ? Max temp is 95f (35c). Tomato seeds have been know to germinate at temp as low as 40f (4c) -- but expect germination to take a month or more and your germination rate (% of seeds that germinate) will probably be very low. GREENS: way to varied to give an answer -- example: KALE has an optimum germination temp of 65F (18c) and range of 45°F - 85°F (7-30c), while SWISS CHARD's optimum germination is 80°F (27c) with a range of 40°F - 95°F (4-32c). Days to germination vary based on variety and temp. I generally recommend starting peppers and tomatoes indoors -- and with greens it depends on the green -- kale and chard are both tough, and both have a very wide temp range for germination so outdoors is fine. You also have to consider insects... larger plants have a better chance (in general) of survival if you experience pest problems. OF course a lot depends on how long your growing season is-- in a really long and hot growing season, starting tomato seeds outdoors is no problem, in a shorter cooler growing season the optimum germination temps may never be met (sustained) so starting indoors is pretty much a given.

- Celeste Archer

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This planting guide is a general reference intended for home gardeners. We recommend that you take into account your local conditions in making planting decisions. Gardenate is not a farming or commercial advisory service. For specific advice, please contact your local plant suppliers, gardening groups, or agricultural department. The information on this site is presented in good faith, but we take no responsibility as to the accuracy of the information provided.
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