Siberian iris

Siberian iris should be watered regularly during its growing season, which is generally early to mid spring in most regions. Water once or twice a week if there is no rain in your area, making sure the soil around the iris is well moistened. Reduce the frequency during hot weather, and increase it during cooler or dry spells. Avoid soaking the soil, as the iris is susceptible to root rot. In the fall, once the foliage has died back, reduce watering to once every other week or less.

Siberian iris (Iris 'Illini Charm') require full sun to part sun, meaning they need 6-8 hours of bright, direct sunlight per day. When given the ideal exposure to sunlight, the Siberian iris will grow and flower profusely. The recommended amount of sunlight for this plant species is 6-8 hours, but it should be noted that, on days when the temperature is particularly high, it may be beneficial to limit the amount of direct sunlight that this species receives to avoid scorching of the foliage. In addition, full sun does not necessarily mean "all day" sun exposure; for the species in question, morning sun exposure should suffice.

Siberian iris (Iris 'Illini Charm') should be pruned in early spring, before the new buds start to emerge. To prune, simply remove any dead or damaged foliage and stems, and trim the stems back to around 2–3 inches. This should be done just once each year. Make sure that when you prune, you don't remove any buds or new foliage. Doing so could stunt the growth of the iris and reduce flowering.