Growing Sunflower

helianthus annuus : Asteraceae / the daisy family

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

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

  • S = Plant undercover in seed trays
  • T = Plant out (transplant) seedlings
  • P = Sow seed
  • Sow in garden. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 10°C and 30°C. (Show °F/in)
  • Space plants: 20 - 45 cm apart
  • Harvest in 10-11 weeks.
  • Compatible with (can grow beside): Cucumbers, Melons, Sweetcorn, Squash
  • Avoid growing close to: Potatoes

Your comments and tips

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31 Jul 24, Catherine (Australia - tropical climate)
I live in Cairns. Can sunflowers be grown here and if so, when is the best time to plant these?
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06 Aug 24, (Australia - tropical climate)
Check the planting guide
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30 Jun 24, Maureen McGrath (USA - Zone 8b climate)
What's the latest I can plant sunflowers in my zone?
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28 May 24, Lisa (USA - Zone 7b climate)
I want to plant sunflowers for table arrangements for a fund raiser Oct 19. What variety would be best for a late planting and when should i plant them for the right timing?
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24 May 24, Anonymous (USA - Zone 9b climate)
Is the end of May too late to start sunflowers in Zone 9b?
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30 Dec 23, paul (New Zealand - sub-tropical climate)
Do Sunflowers and beans grow well together
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04 Jan 24, Megotu farms (USA - Zone 8b climate)
Paul We grow sunflower with our yard-long beans in North Louisiana to redirect stink bugs .... they grow well together here as the soil does not need anything different ... Marigolds grow well to help with the horn worms ....
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02 Jan 24, (Australia - sub-tropical climate)
You can.
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05 Dec 23, nancy aldape (USA - Zone 9a climate)
I love sunflowers
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02 Jan 24, Celeste Archer (Canada - Zone 5a Temperate Warm Summer climate)
Me too.
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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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