I'd just look at any of the online sources for a small-flowered variety that has multiple blooms per stalk.

Martha

sex.. pollen.. ovary.. etc ... [hows that for a start... lol]

many plants do not come true from seed... and are in fact sterile .. and i suspect that is what you are finding ...

food crops are selectively bred for a huge crop .. for processing and sale ... there is no inherent need for them to consider germination of the following generations ... as its a one and done system .. and in fact ... the growers dont want them to seed... rather relying on planting fresh seed with the genes they want the following season ...

so it does not surprise me.. that bird food seed would fail on some level ...

soooo ... if you are going large.. and want a crop.. you select a cultivar that will provide such..

and you plant the same cultivar next season.. and do not rely on the seed yours produce in fall ...

be the farmer.. buy the seed for the product you want ... and do it again in the future ...

it is akin to alyssum in my yard ... no matter what fancy color you buy.. if you do get seedlings the next year .... 99% will be white ... its all in the genetics ... or the regression of the genetics

ken

You will hit the jackpot at the link below. I LOVE sunflowers and a lot of people probably don't know that there are pollenless and seeded varieties. I know some people don't want the seeds, so that's an option for them, but when you want seeds....
Autumn Beauty has multiple flower heads on nicely branched plants and produces seeds. Evening Colors is another that produces multiple flower heads in gorgeous colors and has seeds and Ikarus is a bright yellow, multi-branched sunflower that produces seeds. Enjoy your sunflower garden!

Here is a link that might be useful: Sunflowers galore!

Thanks for the responses all!
Grandmamaloy, that's perfect! I needed to know a few "seeded" strains and those will work great.... Actually your enthusiasm for sunflowers has me thinking I might have to plant a bigger patch. Hmmmm. It's doable, the shrub border is kinda boring most of the year and really hasn't filled in yet :)

The problem with the birdseed isn't that it's not productive, it's very productive, which makes sense since it's farmed for the seed. The problem is they don't produced the pollen. There's no pollen to form seeds with and as a result it's only when a sunflower with pollen pops up do the bees have something to spread around.

I guess that's perfect for the guy who sells the seed, people can harvest the seed they grow but no one can plant the seed and expect a good crop..... so they keep coming back for more each spring, but I wonder if it contaminates any wild populations of sunflowers with a no-pollen gene, leaving them unable to reproduce.... Like it does the sunflowers in my yard.

Wow! There are some beautiful sunflowers available. I wish I had more sun in my yard.

Martha