Growing Broccoli

Brassica sp. : Brassicaceae / the mustard or cabbage family

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

(Best months for growing Broccoli in South Africa - Summer rainfall 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 4-6 weeks. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 45°F and 86°F. (Show °C/cm)
  • Space plants: 14 - 20 inches apart
  • Harvest in 10-16 weeks. Cut flowerhead off with a knife..
  • Compatible with (can grow beside): Dwarf (bush) beans, beets, celery, cucumber, onions, marigold, nasturtium, rhubarb, aromatic herbs (sage, dill, chamomile, oregano)
  • Avoid growing close to: Climbing (pole) beans, tomato, peppers (chilli, capsicum), eggplant (aubergine), strawberry, mustard
  • Nearly ready for harvest
  • Early stage
  • Side shoot regrowth after main head cut

Keep well-watered as seedlings. If left without water they will bolt to seed and be inedible. The plants should grow to develop plenty of large healthy leaves, then the green flowerheads follow, which are cut for eating. Leave the plant growing after cutting the main flowerhead, and get additional crops from the sideshoots which will develop.

Watch for cabbage white butterflies and remove the eggs and caterpillars as soon as possible.

There are two main types of broccoli. The purple sprouting is hardier. The heading varieties cope well with warmer weather.

Once a plant opens its yellow flowers then it is generally past eating as the flavour gets a bit overpowering and the plant gets very woody. Harvest them sooner rather than later.

'Broccolini' is a variety grown for the edible stalks. Grow fast with plenty of water and food, and pick as soon as possible.

Culinary hints - cooking and eating Broccoli

The stem (peeled), leaves, and flowerhead are all edible.

Steam for best flavour. Peel large stalks, slice and steam.
Goes well with blue cheese sauce.

Your comments and tips

16 Aug 18, KOBAMO NTWAETSILE (South Africa - Semi-arid climate)
greetings farmers. I need advice on how and when to produce broccoli vegetable in Botswana. the good responsive type for our climate condition. thanks in advance
08 Dec 17, Kenneth Chagunda (South Africa - Summer rainfall climate)
what type of pesticides are used on the plants and what type of fertilizer should be applied too.thanks
22 Nov 17, kenneth (South Africa - Summer rainfall climate)
what pesticides should be should used on broccoli if attached
31 Dec 16, Patrick Hanratty (South Africa - Summer rainfall climate)
I bought seedlings that said they were Kale from Spar here in Centurion. So now its 31st Jan and they are as big as small bushes about 1.5 metres and certainly not Kale but obviously Broccoli. No heads yet although 5 months growing. Should i wait for cooler weather for them to head or is it better to pull em out because there will be no cool nights until end Feb.
25 May 16, Karan Rai (South Africa - Summer rainfall climate)
Greetings , I want to plant broccoli,being a novice , i need some help on how to grow them we are approaching winter ,we will have tempreture ,20/25 deg not very cold and no snow. Can you advise please Regards Karan rai
18 Jan 15, jefrey phili (South Africa - Dry summer sub-tropical climate)
When to plant broccoli and how to control pest in broccoli? (For planting check under 'Broccoli' in the calendar. Liz)
23 Jun 14, Lynne Smith (South Africa - Humid sub-tropical climate)
When and how to plant Broccoli in Durban...Thank you.
09 Jun 14, Mothati Bagwasi Gabasiane (South Africa - Humid sub-tropical climate)
Can you add fertiliser as additional nutrition to manure? If so which is best?
04 Mar 14, bux coetzee (South Africa - Humid sub-tropical climate)
Need to plant in tunnels to provide broccoli in winter /what watering system best/ soil preparation particular requirements/ temp to maintain ? combine with other ie greenpeppers BUX
16 Oct 13, Trudi (South Africa - Humid sub-tropical climate)
"If left without water they will bolt to seed and be inedible" - I refer your comment above - I think this is what happened to my broccoli - no heads but long sprouts - I presume that is what you refer to as "bolt to seed". I water my veggies every morning, are there any other factors that may cause this ? I presume I can't eat the long sprouts - do I cut it out and wait for the additional crops ?
Showing 1 - 10 of 14 comments

is broccoli a vegetable that will grow with low maintence

- declan kearney

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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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