How do you quickly tell if a problem is fungal, bacterial, or viral? Share photos, tips, and resources.
To quickly identify if a leaf issue is fungal, bacterial, or viral, start by examining the shape and color of the spots. Fungal infections often appear as circular spots with a brown or gray center and may have fuzzy growth, while bacterial spots can be water-soaked and irregularly shaped. Viral infections typically cause a mottled appearance or yellowing along the leaf veins. Additionally, check for any unusual growths or distortions in the leaves, which can indicate viral issues. Observing the plant’s environment and any recent watering practices can also help narrow down the cause.
It’s great that you’re looking closely at the symptoms! In addition to what Ava mentioned, consider the texture of the leaf as well. Fungal infections might lead to a powdery texture on the surface, especially with powdery mildew, while bacterial infections can feel slimy if you touch the spots. If you find a sticky residue on the leaves, that could indicate a bacterial issue. For viral diseases, always look for stunted growth or unusual leaf curling, which can be key indicators. Proper sanitation and good airflow are your best defenses, so make sure to keep your plants spaced well and remove any affected foliage promptly.