It seems I have to upload pictures to houzz before I post. This website is getting weird or maybe I'm getting weird. > <

Yes, pictures would be helpful to see. Yes, it does seem to be like powdery mildew. You should remove the flowers and stalks, to prevent spreading.

Usually powdery mildew looks like dusty flakes or white powder sprinkled over leaves/flowers. You should remove the leaves as soon as possible if it has spread all over. If its still in the beginning phase, you can try to wipe it off with neem oil. Usually dry air can cause powdery mildew, that happened to me a few years ago. A humidity dome helped.

You can find more info about powdery mildew here:

https://www.babyviolets.com/powdery-mildew-african-violet-plants/

Cooks

Cooks,

Thanks. I thought it happen when it is humid. Usually it is on flower and it never spread to leaves for me. Thanks

What I see (when I get PM) is that the plant has been stressed in some way. Usually for me, that means it dried out excessively in the past. However, it could be almost anything (as root cause). I believe PM is a ever-present curse, just waiting to happen.

That might be possible to my case as well.

I find that some plants are just more susceptible, as well ...

Absolutely agree aegis1000. I have a red mini that is very fussy and prone to PM. If I keep on top of good culture, it does fine though.

Just this time of the year...spring is close it actually not necessary a sign of high humidity - it s a sign that there is a drop of the temperature below the dew point early in the morning and not enough air movement to prevent drops of the dew to attach themselves to the leaves and blossoms. Drops of the dew help the spores of PM hatch. The sun is getting brighter. our houses warm up durng the day, chill up during the night.

So - everything said above - is what needs to be done... all of it. Remove damaged leaves and blossoms, spray with Immunox Spectracide fungicide - you can get a concentrate on Amazon, or neem oil and put the fan on. You can run the airconditioner fan non-stop instead of manual if you have a larger collection in more than one room. At least until you get the small fans in your growing areas.

The important part - we have another couple months of Powdery Mildew season - and it will get worse before it gets better.

I.

Irina,

Thanks for detail explanation. I inspected all my plants. So far the leaves are ok, only some of the bloom has powdery mildew. There are 2 plants in doom and the bloom are ok. I may spray them with neem oil.

Thanks

Since I have been running a room air circulator (not a typical fan), I've had no problems with powdery mildew. It's a small, relatively inexpensive unit made by Vornado. I don't even run it on it's fastest speed, and it's very quiet.

Tina at Bloomlover's just uploaded a new video about powdery mildew. I think she did a good job showing it, explaining it and telling you what works to get rid of it. You may find it interesting: https://www.youtube.com/watch?v=x1xQK9QWJQE&feature=em-uploademail