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
26 Aug 23, Linda (Canada - Zone 3a Temperate Short Summer climate)
I would like to know what sunflower seeds can I plant in September in calgary zone 3
Reply or Post a new comment
06 Sep 23, Anonymous (Canada - Zone 6a Temperate Warm Summer climate)
Any variety.
Reply or Post a new comment
20 May 23, David (USA - Zone 4b climate)
Am in zone 4b. Is there a Sunflower I can plant that only gets 2 feet tall?
Reply or Post a new comment
06 Jul 23, Brayden (USA - Zone 8b climate)
Botanical Interests has some good dwarf varieties like Sunspot Dwarf that grows 18-24" tall and is good for container planting
Reply or Post a new comment
12 Apr 23, Chris Harcoan (Australia - temperate climate)
When is the best time to plant sunflowers in Mildura Victoria...
Reply or Post a new comment
03 Apr 23, Helene Snyders (South Africa - Summer rainfall climate)
Where can I get seed of Sunflower Single Sunspot Helianthus annuus regards Helene Snyders
Reply or Post a new comment
19 Apr 23, (Australia - sub-tropical climate)
Maybe online
Reply or Post a new comment
05 Apr 23, (South Africa - Semi-arid climate)
Try internet sites.
Reply or Post a new comment
24 Mar 23, Wayne Thresher (New Zealand - temperate climate)
I lost most of my crop to the wet chill weather this past summer. I'll have to buy chook feed this year. Can anyone recommend the hardiest crop that can tough out changing climate. rainy, windy wet cold ... nevermind... I'm moving :) Same question for maize if you have knowledge
Reply or Post a new comment
27 Mar 23, (Australia - sub-tropical climate)
The weather works against us sometimes.
Reply or Post a new comment
Showing 21 - 30 of 172 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.