The Dwarf Korean Lilac in treeform is a reliable addition if you need something interesting at height. Reddish purple buds open to lilac pink flowers that are rich in fragrance.
Cold Hardiness - can handle temperatures down to -34C. Sizing - the top part of this plant grows to 4' tall and wide so overall height of 8' but can be kept small with a pruning once a year after flowering. Location - Full sun to 50% shade, dry soils or wet soils it's all good, wind is no problem but might need a tree stake the first few years.