A good, Shade Loving, fast growing, privacy "bush or shrub"?
Answers:
Most fast growing trees become a real problem because of how the spread and have a tendency to be brittle and break easily.
Because your location is shaded that means many shrubs won't grow well there.
I think Bamboo would be a good solution. It grows fast up to 30 ft tall and forms a dense wall of vegetation. You can keep it trimmed to a shorter level. It will spread but you can mow over the growth you don't want.
Rose of Sharon is a shrub that might also work. It will spread quickly also.
Good Luck.
Other answers:
Bamboo is great for a privacy screen. It grows fast, is attractive looking and low-maintenance.
Bamboo is great for a privacy screen. It grows fast, is attractive looking and low-maintenance.
Bamboo is good and fast growing too, but it grows everywhere. Travels underground approx. a foot a day. Daytime Jasmine is fast growing, smells good and spreads, also many Pivot hedges. I have all and they're good in your area too.