Looks like dahlia -- not one of my go-to plants, perhaps someone else will be more certain?

Mums ....not by those leaves a Dahlia yes ,but over here we have to dig those out in the fall or they would freeze ,

http://cache.desktopnexus.com/thumbnails/1313238-bigthumbnail.jpg

It might be zinnia elegans...not sure, but it looks like that.

I'm almost sure it isn't dahlias. Itt has thin stems and thin, hairy roots; not bulbs or tubers. It is easy to divide and transplant, and NEVER dies out over winter (Minnesota sub-zero temps). I also noted that bees don't seem to have much to do with it. Don't know why.

I also think it looks like a member of the mum family, but perhaps a wild strain. It's not zinnias though. Different look, stem and texture all together. Much more delicate of a bloom than the zinnias. Your picture is gorgeous though.

To any other commenters, I have to do a bit of yard work in between the rain today, so don't give up on me if I don't reply immediately. Thanks.

this is a Zinnia
http://s3.amazonaws.com/picable/2008/08/01/247441_Yellow-Zinnia_400.jpg

I think it's a Rudbeckia 'goldquelle'.

Looks like dahlias

That looks like the one carolins!

Hi all. I'm back. I think the blooms look like carolins. Carolin, can you give me a close up of the leaves on that plant? Thanks everyone for helping. Keep things coming if you have more information.

I have Rudbeckia 'Golden Glow' in my garden. It looks like your plant and it is very tall - 6 to 7 feet. I bought it from Select Seeds.com

Saller what do the leaves on yours look like? Also, I will see what I can find on line for the Golden Glow. I have had other Rudbeckia in the past that looked different. Thanks everyone.

Hey everyone. Yes, it is the Rudbeckia Golden Glow. I found some on line that showed the leaves. Thanks so much everyone. I have pictures of arrangement with it on my website www.artzzle.com if you want to see it. Thanks.

Glad the mystery has been solved. I was sound asleep when you asked me for a close-up of the leaves, so... ;-)

Botanists use the term DYC for darn yellow composite, as the family has so many many yellow flowers, some of which are difficult to distinguish.... The family compositaea (it's technically a compound structure made of many little flowers), or asteraceae is full of them. I have one which just showed up and grows more like 6-8 feet tall. Mine spreads by runners....and I hate yellow.

midrashist: I'll look up your terms to learn more, to see what other crazy relatives this thing may have. I too, am not crazy about yellow ... but mostly in decor. With our short summers here, I'll take every color I can get outside :) And these are strong enough for casual vase arrangements, with a little help from floral tape or wire, so I have fun that way too. Thanks. Safe holiday everyone.

Hello, this Rudbeckia Laciniata, also called "Outhouse plant", is common even here in Czech Republic, middle Europe, in the old-fashioned village gardens and out of them. I made few photos, but its time is over already, here.

Thanks Iva. Fun name "outhouse plant" :)