Beginner Gardening: zucchini leaves are yellowing and dying, 1 by moenep

moenep wrote:
The leaves on my zucchini plants are getting yellow and eventually dying. New growth leaves are fine but eventually they get yellow. I live in Austin, Tx and its already getting pretty hot. The plants get full sun during the majority of the day then shade in the evening. Ive had someone tell me they get too much sun. I was wondering if that was true or if it was something else?

I water most every day. I have tomatoes and eggplant in the same bed and they are fine.

this is also happening with my cucumbers.

any suggestions?