Growing Cauliflower

brassica oleracea var. botrytus botrytus : Brassicaceae / the mustard or cabbage family

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

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

  • S = Plant undercover in seed trays
  • T = Plant out (transplant) seedlings
  • P = Sow seed
  • Grow in seed trays, and plant out in 4-6 weeks. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 50°F and 86°F. (Show °C/cm)
  • Space plants: 24 - 39 inches apart
  • Harvest in 15-22 weeks.
  • Compatible with (can grow beside): Dwarf (bush) beans, beets, celery, cucumber, onions, marigold, nasturtium, rhubarb, aromatic herbs (sage, dill, chamomile)
  • Avoid growing close to: Climbing (pole) beans, tomato, peppers (chili, capsicum), eggplant (aubergine), strawberry, mustard

Your comments and tips

23 Nov 08, Kenneth banks (Australia - cool/mountain climate)
my caulieflowers have a yellowish tinge to them when havested.Are they alright to eat. Thanks
20 Nov 08, graham (Australia - temperate climate)
I may be interpreting the info from this site incorrectly, most of the comments reinforce what i thought, that cauliflower is grown in cooler months and yet this site shows planting times of mid summer with harvest at the end of summer. Can some one please explain thanks
16 Nov 08, Rob (Australia - temperate climate)
Hi, I have had a similar effect happen to my cauliflower as question #15 as mine were also growing very well and had small curds that separated into lots of stems when they grew a bit larger.Can you tell me what has caused this to happen?
12 Oct 08, Kathryn (Australia - cool/mountain climate)
I didn't pick my cauliflower soon enough and the head has a pinky/purple colour on it. Is this discolouration or could it be a fungus? Not sure if I can eat them. Thanks
07 Oct 08, coral (Australia - temperate climate)
My last batch of cauliflowers have produced amazing foliage but no curds. We normally get great curds. What has gone wrong this time?
21 Sep 08, Simon (Australia - cool/mountain climate)
Hi, My cauliflowers have gone to seed does anyone know why
31 Jul 08, teash (Australia - temperate climate)
Hi Ros, I had the same issue with my cauli, they told me that it was a different type of cauliflower, it almost looks like a broccoli? I prefer this type actually, easier to cut when you need it.
15 Jul 08, Ros (Australia - temperate climate)
I had 8 cauliflowers growing beautifully, each had a small curd; but as the curds started to grow a bit bigger, they separated into lots of stems. Why did this happen, please?
11 Jul 08, Liz (New Zealand - temperate climate)
Hi K Harrison, It is difficult to say what is wrong without seeing your plants. One possibility is frost damage. Can you take a piece of a damaged plant into your local nursery? They may be able to look up in some reference books for you.
11 Jul 08, Liz (New Zealand - temperate climate)
Michael, to get a good size curd from each plant, you will probably only fit three plants at the most in each tub. Cauliflower like plenty of organic matter and some lime to reduce soil acidity. They are fairly slow growing and do not like hot weather. Make sure the tubs do not dry out.
Showing 181 - 190 of 204 comments

Being new to the veggie planting, and can I say I really do enjoy my little garden. My question is when is the right time to remove the cauliflower heads??

- Steve

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