Benary's seem to be a favorite but though they mention mildew resistance, take a look at those leaves, mildew all over.

It's probably fine but something to note.

To those of you that have grown 'Benary's Giant Lime' has mildew been a problem?

Wow, you're right about the picture. How could they use that as their photo!?

Martha

Maybe it is chemical residue on the photo. Sometimes a fungicide will leave a residue if heavily applied. I have grown the Benary's before and it seems to me that ALL zinias will get powdery mildew to some extent.