Question
The leaves on my tomatoes, cucumbers, and beans are turning Yellow wight brown spots on them and some are turning gray and ashy looking. What can I do for this?

Answer
Gena:
It sounds like you could have a number of problems. Fungus, powdery mildew, aphids, even over- or under-watering and nutrient deficiencies.

Try using a fungicide such as Neem oil or a mixture of baking soda and water (1 T/gal). don't over water, and do your watering early in the day.