Irises

Question

I gave someone iris rhizomes 3 years ago. They bloomed the first year but not the following 2. The leaves look VERY healthy, and I wouldn’t think they should need dividing already.

Answer 1

Lack of flowering can indicate the plants should be divided.

Excess nitrogen can also inhibit flowering.

https://www.gardeningknowhow.com/ornamental/bulbs/iris/iris-plant-care.htm