In the last few days, my tomato plants (most notably the heirlooms) developed a yellowing with brown dots on some of the lower leaves. I have done a little research, but I am having a hard time decifering between certain diseases from the photos I find.

I also stumbled upon a slug chewing on my Zinnia seedlings this morning, so I know the holes in those plants are caused by slugs :( Could the holes in other leaves be caused by those as well, or do they look like something else to you?

This is my second year trying for a garden and the plants were doing so well until now! (Last year, my dog jumped the chicken wire and pulled all of my plants!) I would hate to lose everything at this point.

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This is my Green Bell pepper plant. The leaf at three o clock has a few light colored specks (hard to see in this photo)

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This is a hot pepper plant. The leaves near the center at the top are wilty-looking and not soft like the others.

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My cucumber plants... yellow and spotty!

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A few of my tomato plants. Look near the base of the stem for the yellow/brown speckled leaves.

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Zucchini plant... doing very well except for this leaf. It is very close to the Zinnias that look like:

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Zinnias...

One more question- I noticed the cucumbers I planted in containers are MUCH greener than the ones I planted in the bed. Is there anything I can do to green up to the bed plants?

Thank you in advance for any ideas/advice you have. I am at a loss!