Thank you, thank you -- all of you. I am going to try to post some pics I took today. I am hoping they will be more revealing. Sorry that last one is so blurry. Berndoodles, thanks for the pics of leaf hopper damage. I think I certainly have that, don't you (referring to the pic with the lovely bugs)? I also found some webbing, so I think maybe I have spider mites. Oh, joy! And I also think I have powdery mildew. I would love anyone's advice. I sure wish I had a flatbed scanner. My daughter has one, but she is out of town. And I wouldn't mind if we had a Bug Man out here in Colorado. However, I took samples to my local nursery and the very nice rose lady there confirmed that I have several separate problems. She thought that the drooping rosebuds were caused by thrips and told me to go home and cut all of those drooping buds off and dispose of them. She thought I had powdery mildew, too, and also spider mites. She advised that I use Bayer All-in-One spray, so I bought that, but after reading the instructions, I decided to try Neem Oil because the instructions said not to use when bees are active, and they are very active on Ballerina, at least during the day, but maybe I could use it at night. I sprayed yesterday very thoroughly with Neem oil and will repeat in 7 days. However, since my roses are so badly infected, and with multiple buggies or whatever, maybe I will have to go toxic. Another problem with me using a toxic spray is I have large pots of herbs close to Ballerina, in fact right beside it. I think I could cover the pots with black trash bags or something. But I also have black raspberries whose vines are kind of intermingled with one of my New Dawn climbers. I'm not sure if I can cover all of them enough. Maybe if I used a hand sprayer rather than a hose-end sprayer it would be easier. So what do you think? Thanks again. Marlene

Prevention is the key. You need to start spraying fungicides before you notice the Powdery Mildew. There are various sprays you can use including milk, baking soda, neem oil, synthetic sprays like Daconil, etc. but once your plants have PM your only hope is to slow down the spread. It's something you are going to be battling for the rest of the season. A search over on the Vegetable Gardening Forum will pull up many discussion on PM. Rodney P.S. This forum gets almost no traffic. In the future you might want to post over on the Vegetable forum.

It definitely makes sense. Especially in cases like Bart and Mad Gallica describe. In my yard, I seem to only have issues with powdery mildew when it becomes more humid (here - that means rainy), but when it's still warm during the day and cooler at night. That usually equates to early fall. I don't seem to have issues with it during the dry heat of summer. The powdery mildew I just found on my roses that weren't mulched was the worse I can remember. And it really wasn't that bad. It was probably the worst on Iceberg of all roses! Bizarre! That one never gets mildew in my yard. I usually keep my roses very well spaced and mulched, with drip irrigation. I think that has really helped. I don't spray (usually). I have only really purposefully gardened in Northern California though, and our conditions are so different from most. I'm inland with a lot of dry heat ... and over the last few years with such severe drought conditions and weird climate changes. Although, since I found these forums I was thinking about squeezing everything together in order to fit more roses in! On second thought, I'm going to pull back and stick to my usual spacing after all. More roses will not be better if they're covered in mildew. More disease maintenance and pest control takes all the fun out of it! Thanks for explaining Roseseek. Nature using mildew and rust to help the plant defoliate in order to survive colder or hotter/dryer climates makes total sense. Your explanation for how mulch helps ward away mildew makes sense too... and fits with your explanation of what causes mildew. It's wonderful and invaluable to have such knowledgeable professionals like you on these forums. Thank you so much for making yourself available and sharing your wisdom.

I think the mildew spores travel so easily that pulling up your zucchini plant won't necessarily prevent it from getting to the cucumbers. It's good you've been trimming off infected leaves, but I would keep all the plants and make sure they're being well fertilized so they can better fight off the PM. Here's a home remedy often referenced for powdery mildew which I haven't tried, but is cheap and you have nothing to lose. To make one gallon of spray, use 3 parts water and 2 parts milk, plus a teaspoon of baking soda. Spray on the leaves on a sunny day. Good luck!