Leaf holes can be used to identify common garden pests and diseases.
Leaf holes can be caused by insects, disease, and chemical or physical damage. Many rose bush leaves exhibit holes caused by their own thorns. Wind whipped branches can also cause holes in leaves. In these cases, there’s really nothing you can do. Chemical damage is usually caused by herbicide over-spray. Using chemical herbicides more carefully (or not at all) can prevent this from happening. The signs of pest and disease damage, however, can be used to fight back.
When a leaf has a hole in it, photosynthesis is reduced, the plant may be weakened, and it becomes more vulnerable to other pests and diseases. Use the information below to learn how to identify the cause of leaf holes in your garden or landscape plants.
Once you identify the cause of holes in your leaves, you can select the best treatment. This list is by no means exclusive, but it should give you a good starting point. If you have other causes of leaf holes, please share photos in the comments below!
I hope this information inspires you to grow more of your own food. You can ask your garden questions on my Home page.