Q&A - What causes the spots on my iris leaves?
Question:
What causes the spots all over my bearded iris leaves?
Answer:
The spots are caused by Iris leaf spot. It is a fungal infection. TSU Extension Agent Joellen Diamond says when you see it on your plant you need to cut it out. Also, you need to collect and dispose of any dead leaves – and not in the compost pile. The spots take away the ability of the leaf to make energy for the plant and, if left alone, it will kill the plant. You can also use a preventative fungicide like Daconil or a copper-based fungicide. You should also see if the soil is too moist, as this creates an environment the fungus can thrive in.
Related Resources
Iris Leaf Spot
Iris Diseases
What causes the spots all over my bearded iris leaves?
Answer:
The spots are caused by Iris leaf spot. It is a fungal infection. TSU Extension Agent Joellen Diamond says when you see it on your plant you need to cut it out. Also, you need to collect and dispose of any dead leaves – and not in the compost pile. The spots take away the ability of the leaf to make energy for the plant and, if left alone, it will kill the plant. You can also use a preventative fungicide like Daconil or a copper-based fungicide. You should also see if the soil is too moist, as this creates an environment the fungus can thrive in.
Related Resources
Iris Leaf Spot
Iris Diseases