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
T T T                 T
P P P               P P

(Best months for growing Cauliflower in South Africa - Summer rainfall regions)

  • 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
  • A variety of purple 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 eaten raw, steamed, stirfried, grilled, or roasted. Popular grated and steamed/stirfried as a low-carb rice substitute.
Cook briefly and add to curry mix.
Traditionally served with cheese sauce. Add tomato slices for colour.
Toss with oil and spices and roast/grill until browned and delicious!

Your comments and tips

16 Mar 22, Keith SPICER (South Africa - Summer rainfall climate)
My cauliflowers are frequently attacked overnight in their growing boxes which are about a metre high . What could be the cause of this? There is no evidence other than tooth marks. Rats?
30 Dec 19, Vikani Mkhize (South Africa - Summer rainfall climate)
I see my cauliflower leaves becoming yellow. What must I do to boost the growth of the plant. It has been coming right with big leaves. Can I pick leaves for consumption
31 Dec 19, anonymous (South Africa - Summer rainfall climate)
Depends how old the plants are.. If old probably a normal function. For your climate zone it says to plant from onwards. Your plants should only be about half grown if planted early Nov. High rainfall may cause the yellow. Look up the internet to see what you can do with caulie leaves to eat. You could put on some fertiliser but not too much as this will only produce lots of leaf and little/no caulie.
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
19 Aug 14, JulieSmart (South Africa - Summer rainfall climate)
My cauliflowers have grown beautifully all through winter with big leaves. The heads formed and while they were still quite small, the individual stalks on the florets became elongated. Did I leave them too long before harvesting or was it due to the increase of sun on the veg patch?
14 Aug 14, Caroline (South Africa - Humid sub-tropical climate)
What can I use against caterpillars eating my cauliflower seedlings? As organically kind as possible please. I seem to do great with spinach and spring onions but every time I plant any kind of cabbage type, little worms eat them within hours! :-)
17 Aug 14, jason (Australia - arid climate)
I made a nice brew from boiling chilli, basil, coriander and garlic to make a concentrate, strained off the solids then added some molasses and a little castile soap. after spraying that on my garden everything had grown much better and no more pests
16 Aug 14, David Esdaile (Australia - temperate climate)
Dipel is a suspension of bacteria (B. thuringiensis) which kills leaf-eating caterpillars (like Cabbage White Butterfly larvae) and is as safe as anything can be. It's a Yates product (at least the one I use is). You'll have to spray a couple of times throughout the season if caterpillars continue to be a problem. If you haven't got hundreds of caulis it's easy to pick off the grubs at early stages of growth. Just look for the little caterpillars on the backs of the outer leaves.
Showing 1 - 10 of 16 comments

It is probably too hot in Nigeria, needs cool climate in winter.

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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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