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 S
T T T             T T T
P P             P P P P

(Best months for growing Sunflower in South Africa - Semi-arid 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

20 Apr 17, Debbie (South Africa - Semi-arid climate)
Want to grow sunflowers. I am in Malmesbury in the western cape. When is the best time to grow them. I have awefull clay soil so that i need to sort 1st.
21 Apr 17, John (Australia - temperate climate)
Looking at the climate for Malmesbury in Western Cape you seem to have fairly mild winters. wait until after any frosts are over then plant your seed. If you have heavy clay soil try and break it up a bit by adding gypsum. I would try and work in about 2kg per square metre. You could also plant field peas or lupins to help break up the soil. These can be forked in when they are flowering. If your soil is really degraded this should help. Alternatively plant some of the shorter varieties that only grow from knee to waist high. Sunflowers are quite tough and respond well to good watering. Trust this helps.
05 Jun 17, Rejoice (South Africa - Semi-arid climate)
Hi,my I stay in Limpopo province and would like to know what is the best months to cultivate sunflower. I'm passionate about planting sunflower please help
09 Jun 17, John (Australia - temperate climate)
Plant sunflower seeds after all frosts are over, if you get them. Sunflowers are fairly tough but will respond to well worked soil with manure or compost added. They will also do better if they get water. Mulch will help save water.
31 Jul 17, Jen (South Africa - Summer rainfall climate)
Hi am I interested in growing sunflowers. I live in Johannesburg, South Africa. It is currently winter but warming up very quickly with Spring coming in September, When is the best time to plant seeds>
24 Sep 17, Philip Rathbone (South Africa - Summer rainfall climate)
Hi. Im getting Married in December and my Fiance wants bunches of Sunflowers for the day. I live in Germiston. Where can I buy Sunflowers
02 Oct 17, Jan Brand (South Africa - Summer rainfall climate)
What fertiliser is best for growing sunflowers? Do they also need more potasium? Please help!
13 May 18, (South Africa - Semi-arid climate)
why sunflower is a popular crop option in marginal areas of South Africa
23 Jul 18, John (South Africa - Summer rainfall climate)
Hi, I am interested in growing sunflowers in large quantities. I do own large open fields with the advantage of long hours of daily sunlight. I live in Lesotho, just outside of the capital town Maseru, completely surrounded by South Africa. It is currently winter but warming up very quickly with Spring coming in September, When is the best time to plant seeds?
03 Dec 18, Thulani Biyela (South Africa - Summer rainfall climate)
Hi. I am at Mkhondo area, can I plant commercially sunflower in December till January?
Showing 11 - 20 of 28 comments

In the Planting Guide it says APRIL MAY.

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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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