Q.What are these spots on my rose petals?
Hello, the 2 or 3 outer petals of my roses develop black spots on the center of their edges. What is this and how can I treat it? I can’t find anything in books or on the internet. I live in a temperate zone with two seasons: rainy and dry, but the problem persists regardless of the season.Thanks for your help, I truly appreciate it. You may post my query publicly, but please send me a copy of the answer by email, as I do not often use the internet. Regards, Denise De Peña, Guatemala, Central America

Certified GKH Gardening Expert
I don't see a rose disease for this either. It can be natural.
https://www.gardeningknowhow.com/ornamental/flowers/roses/black-edges-on-roses.htm