*Helianthus annuus*. New World annual noted for its large flowering head.

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Harvesting sunflower seeds and planting the same year

I live in NY State and planted ~30 sunflower plants this year. I started them very early indoors so had early blooms - I've had seeds on the faded flower heads for ~ 4 weeks now. Is it possible to ...
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61 views

How can I grow sunflowers that will produce seeds in the shells, for my pet bird?

I grow sunflower plants where the flower is not pollinated, and they produce empty seed shells. How do I get the plant to produce seeds shells with a seed inside?
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42 views

Using Sunflowers as living bean poles

About a month ago I got the idea to try growing pole beans (Kentucky Wonder) and using my sunflowers as support instead of bothering to put up a trellis. Of course it wasn't until after I bought the ...
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1answer
121 views

How do I propagate sunflowers?

I have a sunflower plant growing flowers, and I want to grow more sunflowers in my garden. How do I grow more sunflowers from the current plant?
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605 views

Do these sunflower seedlings need to be thinned?

I have two questions regarding the sunflower seedlings in the picture below. I think my sunflowers are too close together. How much should I thin them and based on their height, does now seem like a ...
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485 views

What is the best sunflower for seed production in Pennsylvania zone 6b?

I have been growing mammoth grey stripe sunflowers for a while, but I want to know if there is a better producer for my climate. The area I would plant them in is a heavy, clay base soil. The average ...
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Are the seed pods of giant sunflowers normally empty?

So, I'm attempting to harvest sunflower seeds from some giant sunflowers I planted an age ago. Unfortunately, there's nothing inside the seed pods! I believe the sunflower was a 'giant', it may ...
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2answers
3k views

When should sunflower seeds be harvested?

I've got a few giant sunflowers that are hanging pretty low. I peeled off a few seeds around the outside just to see what they looked like and they look pretty big. They're fairly light though, not ...
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How do I provide support to a growing sunflower?

I am growing sunflowers and they grow quite high, sometimes toppling over. What kind of support can I give to them in this case?