Rhododendron ponticum, called common rhododendron is a species of rhododendron which grows wild in the Iberian Peninsula in southwest Europe and the Caucasus region in northern West Asia.
It has been used as understock for grafting the difficult to propagate varieties.
It produces masses of mauve flowers in loose trusses.
The upper petal has a distinctive yellow blotch.
It is an ideal choice for the novice gardener.