Growing Broccoli

Brassica sp. : Brassicaceae / the mustard or cabbage family

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

(Best months for growing Broccoli in Australia - tropical regions)

  • S = Plant undercover in seed trays
  • T = Plant out (transplant) seedlings
  • 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 7°C and 30°C. (Show °F/in)
  • Space plants: 35 - 50 cm 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

Your comments and tips

02 Oct 13, Steven (Australia - sub-tropical climate)
Leave it alone & do not uproot as it will grow many smaller off-shoots like mini-heads.
29 Sep 13, David Collins-white (Australia - sub-tropical climate)
Planted brocoli in April with kale. Both have grown well here in Sydney. We have been eating the kale for a month. The brocoli has lots of leaves looks good, but no heads. Fertilised soil & have tried watering with diluted Epson salts about 2 weeks ago. What have I missed? Thanks for any advise. David
02 Sep 13, Karan (Australia - temperate climate)
I live in the Perth hills and have started a container garden my broccoli has come on heaps, very healthy looking leaves (I used home compost and potting soil mix) the heads are growing but they are not big heads! How can i grow heads that are as big as what you see in the shops? Im sure I can see tiny florets turning into flowers, does that mean they are going to seed? Shall i fertilise more or eat them now as small as they are or wait until they get larger ? Thanks folks!
10 Jan 14, Monty (Australia - temperate climate)
From what I understand, once you allow the brocolli to flower it will not produce any florets. There are different varieties of brocolli that grow best at different times of the year, so check to see that you have the right type in your garden. Brocolli need a fair amount of water and it's a good idea to fertilise once a month to keep them healthy and producing florets. I've also had problems with my brocolli bolting, so I've been reading up on solutions. It seems that it all boils down to choosing the right varieties for the time of year and making sure the soil is not too heavy.
16 Aug 13, Kristy (Australia - temperate climate)
They should have germinated within 4 weeks. Make sure the seeds are fresh and use good quality soil or a seed raising mix. If its early in the season you can try starting the seeds off in a mini greenhouse type arrangement. Goodluck :)
14 Aug 13, Cass (Australia - sub-tropical climate)
How long does it usually take for seeds to sprout. I have sowed seeds 4 weeks ago and still they haven't sprouted - getting concerned. Maybe it was too early?
18 Jun 13, abbie (Australia - temperate climate)
put some netting over so no bugs can get through
16 May 13, Jenny (Australia - temperate climate)
I have planted broccoli seeds and put them in my hothouse. The seedlings have emerged. How big must the plants be before planting them in my veggie patch?
18 Oct 12, Emily (Australia - tropical climate)
I have just started my first vegi patch so far so good but i have a big bunch of broccoli but i have these tiny grey bugs on them and they all sit in big groups. Ive put down some pellets but they don't seem to be going.
23 Oct 12, Akhi (Australia - cool/mountain climate)
The bugs are most likely Aphids. They are very adept at hiding under the Broccoli florets and hence very tough to eradicate organically. I ten to grow my Broccoli in late summer- early fall ( when the aphids are begunning to find the cool nights a bit uncomfortable) to harvest in early spring which avoids the bugs.
Showing 121 - 130 of 248 comments

hi i live on the gold coast qld .my plants have been planted late in the season .they do not produce much so i let them grow for the seeds .they have the seed pods going on .if i let them grow and seeds drop .will they grow next season or do i have to collect the seeds for the next season .

- marco

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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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