I hope you are growing this plant! If not, go see some and you will be convinced to add it to your must have list...
Siberian iris are sun loving perennials for average to rich soil with a neutral to slightly acid pH; they do well in the typical flower garden but also thrive in soil that is evenly moist or wetter so are great for that difficult "sunny but wet" spot. The long narrow green foliage grows upright and forms a clump. It is somewhat grass-like in texture and looks fresh all season unless grown in a dry location. These plants are usually long lived and trouble free so would qualify as a low maintenance perennial. Look for blue, purple, white, or yellow blooms. The best cultivars hold their flowers on stems well above the foliage. Very widely adapted -- Zones 2 to 9.
The Society for Siberian Iris web site offers a listing of display gardens from California to Maine (and Canada) where you can see Siberian Iris in bloom. Depending on where you live, the Siberian Iris blooming season begins sometimes in May or June. Listing of locations and dates.
If you don't live close to any of the society's designated display gardens, you should still be able to find some Siberian iris growing in a garden near you.
Many botanical gardens maintain a perennial display garden and most should include at least of few Siberian iris cultivars.
Your next best bet is a local plant nursery with a perennials section. They may grow some in a display garden or at least have some for sale -- and in bloom.
Last but not least, tour the neighborhood and see if you can spy any growing in someone's yard!