Looking for a small tree?
Alnus incana Aurea, the golden Alder, is definitely worth a look.
The bark and branches of this small tree have an orangey golden glow during winter, which contrasts with the bright red catkins which begin to form as early as August as continue to develop in size and colour as the winter progresses. This photo shows how they were looking this morning in a clients garden.
This tree reaches 7-12m in 10 years, has a conical shape and does well on moist soils and semi shade