Q.siberian irises
When my Siberian irises bloom the flowers are halfway down inside the leaves. Why does it do that?
Lack of sunlight can be a cause of stunted growth as well as soil, water, nutrients and pests and insects.
Stunted growth could also be a sign that your plants should be divided.
Use these links to help pinpoint the issue.
https://www.gardeningknowhow.com/ornamental/bulbs/iris/growing-siberian-iris.htm
https://www.gardeningknowhow.com/ornamental/bulbs/iris/iris-plant-care.htm
https://www.gardeningknowhow.com/ornamental/bulbs/iris/iris-borers.htm
https://www.gardeningknowhow.com/ornamental/bulbs/iris/rotting-iris-roots-bulbs.htm
https://www.gardeningknowhow.com/ornamental/bulbs/iris/iris-plants-not-flowering.htm