This plant is descended from Chinese plants grown from seed here in Western Washington. It’s hardy and could grow to 6 – 8 feet in ten years.
Flowers are purplish pink and the bush will cover itself in early spring. Rubiginosum is vigorous and can grow in a variety of soils.
It can take sun and, as a good, tough plant, it can also form a nice screen if several plants are planted in a row. It responds well to pruning and so can be kept to a more modest size.
This rhododendron will like: More sun than shade, small amounts of fertilizer on Valentine’s Day and Mother’s Day. Gentle watering with well aerated soil and good drainage will keep this plant happy.