My tomatoes, cucumbers, and purple and green beans leaves are turning yellow and see have brown spots. I'm having a hard time figuring out if this is all the same issue or different issues. The weather here has been hotter than normal and I switched back to raised beds this year so I have all fresh/new soil. But this is only happening in a few beds. I can't decide if it's blight, over watering, or nutrient deficiency, or something else all together.