I live in Missouri. Not sure what zone…
I bought some iris plants on line fron CA and the state or Georgia, two years ago.
Since plants were small I did have some success with blooms this spring.
I am cleaning up my flower beds and noticed that several iris beds are showing line to light color leaves.
Question…is this because the plants are young or in need of fertilizer ?
I am planning on cutting leaves back to six inches….is this a good thing?
Thanks for your service…
This seems like a lack of nitrogen, as this can cause yellowing leaves. I would recommend an all purpose fertilizer. You can cut the iris, or you can leave them. Either will be ok. Here is an article that will help: https://www.gardeningknowhow.com/ornamental/bulbs/iris/iris-plant-care.htm