Re: Pressure washing and bananas
When I lived in Charlotte, NC I had to pressure wash off the green mildew also. Used "Outdoor Chlorox" bleach diluted 50 percent H2O. Checked with several contractors first. Doing one area at a time you do a final rinse after applying and scrubbing in the chlorox. Lastly, rinse off all plants well - top and bottomside of leaves. No problems with any plants noticed.
It's a NC thing - you got Nascar, BBq and mildew (oh my).
Dan
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