What Is This Tiny Yellow Bloom?

Zinnia Bloom

Ask the Expert: What kind of flower is this?
Flower no bigger than thumb nail
Grows up to about a foot tall

Alexandra E

Plant Expert Reply:

I believe it is a type of zinnia.  Probably a Zinnia augustifolia by the look of the leaf in the picture.  Another option would be a type of Dahlia.  Both of these genus are in the Asteraceae family and have similar characteristics.    A view of the plant and the leaves would help me make a better identification.