Q.choosing the correct Hornbeam
I want to plant Hornbeams on the north side of my house, close to a brick wall so that
I can prune them as they grow to look like a hedge perhaps 15′ high. What would you
suggest? Many Thanks Edgar Ellermmann

American hornbeam (Carpinus caroliniana) is more often cultivated as a tree, also similar to beech in its leaf shape, fruit pattern and cultivation needs. Its other common names include blue-beech and ironwood. American hornbeam trees reach a height and width of 20 to 30 feet. As a hedge, it is grows more slowly than its British cousin, but it can withstand frequent pruning for shaping. It is deciduous, but like Carpinus betulus, its leaves stay on the tree or hedge throughout the winter.
https://www.gardeningknowhow.com/ornamental/trees/hornbeam/hornbeam-care-and-growing.htm