Organic gardening means gardening without the use of synthetic pesticides, insecticides or herbicides unless they too are organic. The first step in fighting common diseases or pests is to be able to identify what you are looking at. That is definitely the hardest part. Here are ways to identify and how to Fight Common Diseases In Your Veggie Garden Using Essential Oils.
I personally use and endorse Young Living Essential Oils, but most of these oils can be found online or in your favorite health foods store!
Identifying the different types of blight might be the easiest as it comes on pretty quickly. Suddenly the leaves or branches stop growing, wither, and then rot and die.
Early Blight (Alternaria blight)
Early blight is fungal and affects vegetables and fruit trees. Large brown and black spots form on leaves in concentric rings. You will first notice early blight on lower leaves. Dark, sunken areas on potato tubers is also early blight. To prevent early blight you need to have good air circulation and choose organic seeds resistant to the disease.