Help me identify this privacy tree/hedge

They have an app that you can take a picture of the leaves and it will tell you what it is. I don’t remember the name of it though.

Viburnum for sure! I have a dozen of these I planted a few years ago

Most definitely Sweet Viburnum. I have about 175' linear feet of them around my backyard to hide the fence. They also make the backyard have a much softer and secluded feel as opposed to the hard, exposed feeling of a 6' wooden fence.

Very slow to get started but once mature mine usually need trimming at least twice a year. They can get unwieldy quickly. I keep them about 5-6' wide and about 8-9' tall. Hedge trimmer makes quick work of shaping them up.

I battled black soot mold from whiteflies for a couple of years though. They looked really rough. I had to keep up with a systemic drench and I sprayed the foliage with Bifen (also to help keep the mosquitoes down) and Horticultural oil (really helps to release the soot mold so it can wash off in the rain). My backyard neighbor has a citrus tree that he neglected that ended up being ground zero breeding grounds. He eventually cut the tree down and my problem went away.