An oldie but a goodie; this variety has pure white flowers with bright yellow in the throat. They are held high over attractive blue green foliage that is about 2 feet tall. Hardy to zone 4 this variety even looks good in the winter with its rust fall foliage and attractive seed pods.
Siberian Iris are very hardy (zone 3). This one is deep purple and blooms in early June here in Wisconsin. It gets about 3 feet tall and can form large clumps up to 3 feet across. When the clumps get large enough that they start dyeing out in the middle just do some transplants. They are very tough and can take most conditions including poor dry soil and even boggy conditions, but will do best in moist soil and full sun. Siberian Iris attracts butterflies and they are not favored by deer and rabbits. There are no bugs or disease to worry about with these plants and they remain attractive well into fall and winter. Just cut them down in spring.
Although this is actually a Siberian Iris, it does look like a Japanese iris and is sometimes mistakenly listed as one. The stiff grassy foliage is about 2 feet tall with the 3-4 inch blooms in mass above the foliage in June.
iris siberian rikugi sakura
These beauties are hardy to zone 4 some even say zone 3 and prefer slightly acidic moist soil. They can tolerate wet feet at the edge of your pond, but will also grow in standard garden soil.
The big bi-colored flowers have a wheel like shape to them. There are 6 petals with lavender falls and 3 signals which are also lavender. The center of the bloom is cream to cinnamon in color.
This Siberian iris can be quite tall in fertile moist soil (up to 3 feet). It will be shorter, but still bloom like crazy on sandy soils. The electric blue blooms will appear inky in certain light and have reddish or velvet purple sheen at other times of the day. The signals are white with distinct black penciling. They are vigorous and floriferous, blooming at the same time as the tall bearded iris. The sword like dark green foliage remains attractive long after the blooms fade and even become a rusty accent for the winter garden.