Tips for Growing Sunflowers

Tips for growing sunflowers from the ThriftyFun community.

Basics For Sunflowers

Here are some basics on growing sunflowers:

  1. Plant them in full sun.


  2. Plant seeds 1 inch deep and 6 inches apart (or according to package directions). Water well after planting.

  3. Seedlings usually germinate within a week or two and take 80-90 days to reach maturity.

  4. For taller plants that flower earlier, start them in 4 inch peat pots indoors.

  5. Seedlings are usually thinned to 12-18 inches apart, but can be plants more closely together in containers.

  6. Russian Giants, Kong, and Mammoth varieties grow as tall as 15 feet and have flower heads as large as 20" in diameter. You'll need a pot at least 15" inches deep and 15" in diameter (or larger) to grow these giants.

  7. Sunflower roots grow deep and spread wide so make sure you use a large enough container.

  8. Tall plants may need staking.

  9. Keep the soil in your containers moist and fertilize them with a 1/2 strength organic liquid fertilizer every two weeks.

  10. Sunflowers need lots of water (plants 6 feet tall can consume 8 gallons per week), but over-watering them can cause deformed seed heads. Use well-drained soil and keep the soil in your containers evenly moist. Water seedling deeply once per week for the first month so they develop deep roots. After that, water your sunflowers lightly every day.


Good Luck!


Soak The Seeds

Try soaking the sunflower seeds in warm water the night before you plant them.

Remove Wilting Foilage

It helps also to take off any foliage that is wilting or being eaten by bugs. Of course deadhead those plants to get blooms throughout fall!

By ~ Wendola ~

Coffee Grounds

My nanny used to fertilize hers with some old coffee grounds once every couple of weeks and they grew and bloomed beautifully! Just sprinkle the grounds around the base of the plant and water.

By Michelle

Sunflowers Need...

Lots of sunshine and water!

By Pattie McIntyre

Grow From Seed

Sunflower are super easy to grow. In Canada, it is cold most of the year, I plant the sunflower seeds in my garden the end of May. By the end of August, my heads are mature and ready for drying, for eating, or feeding the birds. I would not buy a mature plant. The beautiful yellow flower only lasts a few days.


By Maggie

Grow In Potting Soil

I have grown sunflowers since I was young. I am wanting them to grow big and use them in senior pictures. I started them in regular dirt and one in potting soil. The ones in the dirt were eaten, I think by something, and the one in the potting soil is amazing. Since then, I have planted 11 in cups with potting mix and potting soil. When you plant them in this, make sure you make a hole in the bottom or near the bottom. They look amazing, I just planted them 5 days ago and they are coming along great.

By Sunflower Queen

Balcony Tips

Sunflower seeds aren't that costly. I'd go to a garden section of a hardware store and buy them. If you are going to grow them in a planter on the balcony, first invest in a heavy planter to put them in. They'll grow tall and would be top heavy. Nice soil, sun, some water and patience, and voila! Good luck!

By badwater


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By (Guest Post)
June 5, 20080 found this helpful

Use the petals to go with your salad!

Reply Was this helpful? Yes
By Sharon L Martin. (Guest Post)
August 17, 20080 found this helpful

I have several large sunflowers growing on a fence by my veggie garden. I live in cold Canada too Magggie! Nova Scotia at that! Love to read comments from Canada too!

Reply Was this helpful? Yes
By alinat (Guest Post)
October 18, 20080 found this helpful

Could any of you put more information about sunflowers? Write back by Sunday 19th 2008.

Reply Was this helpful? Yes

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