This is an image from Rode Hall that I photographed a couple of weeks ago. As you can see the rhododendrons are in full bloom. These showy shrubs originally come from the far east, China I think? They are grown for their flowers which can come in a variety of colours.
They do spread though and can shade out native plants which is why they are sometimes drastically cut back in wooded areas, allowing light to penetrate the canopy of leaves.
I must visit the Dorothy Clive garden soon. They have a large and mixed collection in their quarry garden. They are in the countryside west of Newcastle-under-Lyme.