I am growing different varieties of veggies in pots, and I have noticed these spots on my tomato plants and now okra plants. The infected leaves are usually towards the bottom and I have been cutting and throwing them away but it keeps spreading upwards! Is this blight? Do I need to continue to prune and trash the affected leaves? I didn't have a problem with this last year, but purchased my plants at a different store. Please help identify this mess and give suggestions on what I should do! Thanks for any help!