Growing Sunflower

helianthus annuus : Asteraceae / the daisy family

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

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

  • 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 50°F and 86°F. (Show °C/cm)
  • Space plants: 8 - 18 inches apart
  • Harvest in 10-11 weeks.
  • Compatible with (can grow beside): Cucumbers, Melons, Sweetcorn, Squash
  • Avoid growing close to: Potatoes

Your comments and tips

Post a comment or question Display Newest first | Oldest first, Show comments for USA | for all countries
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?
Reply or Post a new comment
06 Aug 24, (Australia - tropical climate)
Check the planting guide
Reply or Post a new comment
30 Jun 24, Maureen McGrath (USA - Zone 8b climate)
What's the latest I can plant sunflowers in my zone?
Reply or Post a new comment
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?
Reply or Post a new comment
24 May 24, Anonymous (USA - Zone 9b climate)
Is the end of May too late to start sunflowers in Zone 9b?
Reply or Post a new comment
30 Dec 23, paul (New Zealand - sub-tropical climate)
Do Sunflowers and beans grow well together
Reply or Post a new comment
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 ....
Reply or Post a new comment
02 Jan 24, (Australia - sub-tropical climate)
You can.
Reply or Post a new comment
05 Dec 23, nancy aldape (USA - Zone 9a climate)
I love sunflowers
Reply or Post a new comment
02 Jan 24, Celeste Archer (Canada - Zone 5a Temperate Warm Summer climate)
Me too.
Reply or Post a new comment
Showing 11 - 20 of 175 comments
See comments for all plants

Ask a question or post a comment or advice about Sunflower

Please provide your email address if you are hoping for a reply


All comments are reviewed before displaying on the site, so your posting will not appear immediately

Gardenate App

Put Gardenate in your pocket. Get our app for iPhone, iPad or Android to add your own plants and record your plantings and harvests

Planting Reminders

Join 60,000+ gardeners who already use Gardenate and subscribe to the free Gardenate planting reminders email newsletter.


Home | Vegetables and herbs to plant | Climate zones | About Gardenate | Contact us | Privacy Policy

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.
We cannot help if you are overrun by giant slugs.