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Growing Broccoli

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

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

S = Plant undercover in seed trays 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

Your comments and tips

10 Nov 17, Mike (Australia - sub-tropical climate)
Once broccoli has flowered it has gone too far.
21 Oct 17, marie (Australia - temperate climate)
I'm new at gardening in Sydney Australia.(I'm originally from Canada) Am I in the temperate zone? when is it best to grow cauliflower, broccoli, and Brussel sprouts. our broccoli heads are separating. the cauliflower is yellow and completely separated. And no sign of sprouts growing as of yet
23 Oct 17, Mike (Australia - sub-tropical climate)
Broc and cauli plant seeds April May and transplant seedlings May June. Not cold enough for Brussel Sprouts in Sydney Read the notes here for all 3 crops..
23 Oct 17, Mike (Australia - sub-tropical climate)
You are in sub tropical by the climate zone here. If you live in a coldish part of Sydney you would be temperate. The best is probably to have the crop mature by July August.
05 Oct 17, Saints (Australia - tropical climate)
I want t grow broccolli between latitude 12south and 10 south and five miles from northeaat auatralia coastal line. please advise
06 Oct 17, Mike (Australia - tropical climate)
Go to Vegetables and Herbs above and read about growing it in the TROPICS. Sounds like to live at the top end of Australia. Good luck.
30 Aug 17, stella jackon (Australia - sub-tropical climate)
where would be the best town or city in Australia to grow broccoli
31 Aug 17, Mike (Australia - sub-tropical climate)
How long is a piece of string? Anywhere - it is a cool weather season crop. Plant from April onwards. Really hot places it would dry out if not watered a lot. Read up about growing it.
02 Aug 17, Natalie (Australia - tropical climate)
I planted my broccoli at the beginning of June and they have grown very well but so far They haven't developed a head. I fertilised them every two weeks since planting them until a couple of weeks ago when I was told that I had overfertilised them. Is this why no heads have grown?
03 Aug 17, Mike (Australia - sub-tropical climate)
They won't head up until probably 10-12 weeks old. If you used a high % N fertiliser (12-15% N ) then you have over fertilised them (also depends how much you put on). If the plants are very big too much N. Stop fertilizing them and maybe cut the watering back a bit Trial and error. I have planted seeds this year and have had poor results -back to seedlings for me with broccoli and cabbage..
Showing 11 - 20 of 230 comments

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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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