I’d wanted to visit RHS Rosemoor to see how far reality lived up the reputation of its rose garden (no complaints) and for the chance to explore other collections too: of irises, for example. The attractive purple veining and the voluptuous flower form of the one above was particularly striking.
If you like this type of iris, but are unable to source this particular one, there are many other forms of Iris ensata, all with the characteristic yellow signal. Mt. Pleasant Iris Farm’s website has some great advice on the different flower colours available and about growing and dividing Japanese Iris.
Update: Since this post was written, the breeder, John Carter, has been in touch via my friend Barry Glick to explain that after their nursery was sold to Emma and Tom Robinson in 2016, they gave Rosemoor samples of almost all of their irises and are delighted that Rosemoor are displaying them together in a newly created garden.