Rhododendron litangense

This is one of the blue group of Rhododendron, it has tiny pointed glaucous leaves and masses of flowers in mid spring. Being one of the low growing types it requires cool conditions, plenty of sun and good drainage. Mine has been in the garden for more than 20years and is about 40cm high and 50cm wide.
The general rule with Rhododendron is the smaller its leaves the more sun it requires