Hello Herbert. I garden in central Belgium and have a damp bed shaded by the house wall on its north side. This bed gets sun before 9am and after 3 pm when the sun is up high from April to mid September. It gets very cold in winter and is exposed to strong winds.
Plants thriving in there are some hardy ferns, Japanese anemones, chelone, hostas, astilbe, tall primulas, drumstick primulas, astilboides, a small bronze conifer, aquilegias, fritillaria meleagris, hakonechloa aurea, lily of the valley and pulmonaria.