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Growing Sunflower

(helianthus annuus)

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
        P P            

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

P = Plant direct in garden where they are to grow.


  • 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 - 30 cm apart
  • Harvest in 10-11 weeks.
  • Compatible with: Cucumbers, Melons, Sweetcorn, Squash
  • Avoid growing with: Potatoes
  • Young plants

Your comments and tips

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12 Sep 11, justine (Australia - temperate climate)
Why cant you plant sunflower with potato
28 Feb 12, Aleise (Australia - temperate climate)
Hi my science teacher has entered the class in a sunflower comp do you have any tips for me to make it grow big! Thankyou
03 May 12, Robert Goyette (Australia - temperate climate)
Hi I grow potted sun flower seedlings in a glass cage,with a glass top to protect from rain and wind I eventually take the glass top off and just have the glass sides, That way the wind does not blow the plant over. Robert
30 Jan 13, Roberto Giorgio (Australia - temperate climate)
I have grown Sunflowers this Summer Season that stand 2.14m (7 Feet) tall. Do you want me to send you some of the seeds from the tallest one so you can plant them this comming October 2013.. I had no trouble growing them. I will be harvesting the seeds soon. Regards, Roberto Giorgio Urban Farmer Holden Hill SA 5088
02 Mar 13, Charmaine (Australia - temperate climate)
Roberto may I have some seeds too? Plz email me ccstudio@bigpond.net.au
05 Feb 13, hannah (Australia - temperate climate)
hey well i searched up sunflowers and how to grow them apparently it said that you have to have good seeding soil and sow 1.5 inches - 2.5 inches. so i hope this helped and good luck on the fundraiser
25 Feb 13, Oliver (Australia - temperate climate)
Get rid of the pot. If you want your plant to be 6 ft, a pot will not be able to support it. Use a Large recycling bucket . Not a bin, a bucket. As it nears your target height, plant a stake and tie the flower gently to it. Support the stake by stringing it to a bucket with the string only going tight when the stake falls. String from four side of the stake.
09 Sep 09, Beth (Australia - cool/mountain climate)
This is website give me lots of ideas to help me with planting sunflowers seeds So thanks a lot!
17 Sep 09, helen (Australia - temperate climate)
I've heard of people putting an old stocking (nylon type) over sunflower seed heads to deter birds etc from eating the seeds (while they dry on the plant). Not sure if it works. Worth a try I spose.
11 Dec 09, Taryn (Australia - sub-tropical climate)
peoplez don't plant the sunflower withs no shell plant the black ones (NO white ones!!!)

Post a question, comment or tip about Sunflower

Why cant you plant sunflower with potato

- justine


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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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