angel wing 'Sinbad'....mildew
My sister bought a 'Sinbad' angel wing in September. It was a very pretty begonia...beautiful leaves. She had it on her deck, protected from midday sun (when we had any!). Our weather has been rainy, cool & damp...and the leaves suddenly developed what appears to be mildew. She tried picking off the affected leaves but the mildew continued to spread...even to the stems.
She was ready to throw it out, so I've brought it home to see if I can save it. The remaining leaves have all been shed & I'm inclined to cut the stems back hard, in an effort to eliminate the areas most noticeably showing mildew.
As for culture, the plant is in about an 8" plastic pot in commercial houseplant potting soil (seems to be well-drained).
Has anyone had good luck (indoors) with any treatment for mildew on begonias? A good home remedy, maybe? Or even a readily available commerical treatment?
Would love some input...I'd really like to salvage this fine begonia.