Rhododendron Horizon Monarch is has a yellow flower, but opens in buds that start off bright red, then pink, before they transform into yellow flowers .
Purchased at Glendoick Garden centre three years ago, the plant took its time before any flowers appeared.

However the result was so beautiful that John had to paint the blossoms onto a large stretched box canvas. The painting can be seen on this link to Rhododendron Horizon Monarch.