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Growing Cauliflower

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

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

S = Plant undercover in seed trays 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
  • Mature cauliflower
    Mature cauliflower

Large leafed cabbage-like with a white 'curd' or flower forming in the centre. It can be hard to grow successfully. More frost sensitive than most brassicas, it's also not particularly heat tolerant. They tend to fail if stressed when transplanting.

Watch for cabbage white butterfly. Grow better in cooler temperatures. Not suitable for warm areas. Break a leaf over the head to prevent the curd becoming discoloured

Culinary hints - cooking and eating Cauliflower

Cauliflower can be steamed.
Young ones can be broken into small pieces and added raw to salad.
Cook briefly and add to curry mix.
Traditionally served with cheese sauce.
Add tomato slices for colour.

Your comments and tips

19 Apr 18, Leanne Webb (Australia - temperate climate)
You forgot bakeing cauliflower and it is fantastic better than all other types of cooking. Just a bit of olive oil and season to taste
17 Apr 18, Harriet (South Africa - Semi-arid climate)
How to get rid of grub worms naturaly?
07 Mar 18, Njabulo (South Africa - Dry summer sub-tropical climate)
Thankyou so much. Another question, I am around KZN at MANDINI area. Is it possible to plant cauliflower
06 Mar 18, Njabulo (South Africa - Dry summer sub-tropical climate)
I am a farm with little experience about cauliflower. I need to know what best time to plant cauliflower
04 Mar 18, Scott (Australia - temperate climate)
Can I grow cauliflower next to silverbeet in the same bed?
02 May 18, Michael (Australia - cool/mountain climate)
Yes, I've grown it before next to silverbeet
13 Oct 17, John Hansen (Australia - temperate climate)
My cauliflowers are flowering but are not forming tight clusters more like separate pinheads. Planted in May 2017. Thank you
13 Oct 17, Lewis (Australia - temperate climate)
Hi! Great article on cauliflowers, thanks! I'm in Melbourne, and I planted out my cauli as seedlings from Diggers in early July. One of the caulis went to head at the end of august, but none of the others are showing any signs of heading up. I've considered feeding them with seaweed emulsion, but I'm worried that will just promote more leaves. My broccoli has been and gone which I planted at the same time. It's starting to get warm, so I'm worried they've missed their moment? Do you think I should leave them longer or chop them out for the summer crop? Many thanks!! Lewis
16 Oct 17, Lewis (Australia - temperate climate)
Oops! I meant I planted them in early June!! Thanks
04 Mar 18, Scott (Australia - temperate climate)
Plant them around April or May for best results. Feed them once a week with charlie carp or seasol and make sure they get plenty of water in between. good luck!
Showing 1 - 10 of 164 comments

I have the same problem - too much N and probably too much water. My plants struggled to get above surrounding plants and then took off. We are too good to our plants. I have stopped watering them to try and make them go to seed (heads). Take a few bottom leaves off.

- Mike

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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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