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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

27 Mar 17, John (Australia - temperate climate)
March and April are better months to plant broccoli. Having said that you should still get heads. While you are waiting, harvest and eat some of the leaves. treat it the same as cabbage because botanically it is the same plant.
30 Mar 17, Mike (Australia - temperate climate)
Well we have just had our rain down pour. I had a tarpaulin over our young plants to keep the rain off. The wind became too strong, so had to take it down. We have just had 3 1/4 inches of rain in just over an hour. The plants are swimming. 14 days of wet weather out of 17 days. Nearly 16 inches for the month. John I planted normal cabbage and savoy cabbage next too each other last year. The normal grew really well but the savoy would not head up - planted about early August. They were huge plants - all leaf.
21 Mar 17, Ramandeep (Canada - Zone 3a Temperate Short Summer climate)
Hi , I live in Toronto, is a broccoli farming possible in Ontario
22 Mar 17, John (Australia - temperate climate)
According to my research Broccoli, Cauliflower and Cabbage can be planted in late April in Toronto. Seeds could be sown indoors now for transplanting when they are ready.
02 Jan 17, Tania hodges (New Zealand - cool/mountain climate)
Why does our plants only produce really small main heads of broccoli, the plants appear to be really healthy.
03 Jan 17, John (Australia - temperate climate)
It may be a small headed variety. Many of the large headed varieties are only available from commercial seed growers Contact Egmont Seeds (NZ) they have larger headed varieties.
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.
01 Nov 16, Lyn (Australia - sub-tropical climate)
Why should broccoli not be planted in the same bed as capsicum? Too late for me this time, although both seem to be doing well.
02 Aug 16, Ron (Australia - temperate climate)
We just bought broccoli seedlings from our local hardware's nursery, but your info says plant in spring or autumn. Should we return them or is there somewhere they might grow, under the back patio in a pot with winter sun on them perhaps? Please help.
09 Aug 16, Ann-Marie (Australia - sub-tropical climate)
Broccoli need cold to grow. Put them in the coldest spot in the garden. My broccoli is already going to flower but as flowers are edible i dont mind. You may find that you get very little from them this late in the season. Try approx 4 hrs of sunlight per day then the coldest part of garden for the rest of the day. Broccolini might be a better choice this time of year as you pick much earlier.
Showing 11 - 20 of 215 comments

The thing to do to stop it going to seed is to get and eat it fast or freeze it.

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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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