It looks like they got wet while the sun was shining on them. If ever possible, a pic of the plant when it's not wet might help.

I agree with purple. The evidence is in the photo. I used to get those spots when I had to overhead water. Now on drip I get very few of which I attribute to dew.

are you spraying any kind of fert ..???

the tissue of a flower petal... can NOT take such an insult ....

in fact... its so fragile.. it cant even take water.. very often ...

the spots are either fert or water spots ...

and for some reason.. rain wont do.. what tap water will ..go figure ...

ken

One of my neighbors sprayed my beautiful Tidal Waves with Off Deep Woods spray that was meant for his arms. There was a breeze. They look just like this only worse. I'm hoping it just affected the blossoms and doesn't spread through the plants and die. I waited WEEKS before buying the Waves on sale. Jeesh.