Do you have a picture of your plant in flower?

I just went out and took one. They aren't at their peak, they're flowering. It's a $10 digital camera, so it's not very detailed, but maybe you can see enough. The petals are all ruffley, you can't see separate petals, if that helps. I wouldn't know, it's the only kind i've ever seen.

Here is a link that might be useful: Marigold

"They aren't at their peak, they're flowering"

I meant going to seed, not flowering. Sorry.

That is a marigold, not calendula. Calendula is more daisy-like in flower appearance. The leaves are totally different too.

You are right about seed shape too. Calendula is a curley-Q, and Marigold are long thin brown-black tipped seeds. You could post on the seed swap, and get lots of replys for Calendula seed.
Enjoy! Lynn

Thanks for all the replies, I get it now. But is Calendula another kind of marigold, i've always heard it called that. Is it the french marigold, or what's it's common name?

An old common name for calendula is "pot marigold". And I do mean OLD - it got this name way back in time in England (I'm thinking Elizabethan or thereabouts??) when the green parts of the plant were boiled to be eaten as a vegetable.