I just bought a house in Woodinville and I need a privacy screen to block the view of my neighbors barn and outbuildings that are fairly close to my house. I have what they call Alderwood soils - sandy and rocky on the top couple of feet. The area that I want to plant is "mostly sunny" and is elevated so has great drainage. There are a few areas that are blocked part of the day by the neighbors tree. I would like to plant a thick hedge that grows at least 12 feet tall, but no more then 25 feet. I would prefer something that doesn't require a bunch of pruning or other maintenance. It does not need to be formal looking, but I do want it to be evergreen and dense. I would say it is about 50-75 length I intend to plant. I looked at the pyramadalis, and that would be okay, but I am thinking something that grows an even denser screen would be nice.
Oh, and it needs to be nontoxic to horses, dogs etc