Look what I found. What is the name?

I visit this one nursery in my neighborhood a couple of time a year. Every time I go I scrounge around in the corners of their green houses. I found this little begonia tucked in a hidden place. Does anyone know which one it is?

Looks like Don Miller. Great for summer growing but not so great when it comes to mildew in fall and winter.

I agree. It's a total PM magnet. But I keep it on a regular neem spray schedule and it will survive until spring.