This is my second year growing a vegetable garden. I noticed that my tomato plants on the bottom leaves have spots. They are not black but some even have holes. It makes me wonder if they are some sort of parasite?? Can anyone help me out? Not sure if I should get rid of the plants and buy some new ones.

[img]https://img139.imageshack.us/img139/8921/dscf00019sm.jpg[/img]
[img]https://img139.imageshack.us/img139/1775/dscf00020qx.jpg[/img]
[img]https://img136.imageshack.us/img136/1285/dscf00037mp.jpg[/img]
My garden in a local community garden in Iowa

[img]https://img139.imageshack.us/img139/2978/dscf00045uy.jpg[/img]