I have two chicken pens one on each side of my chicken house. I was carrying dirt from one to fill containers for a few vegetables. I am 72 years old and this was hard work so one day I had a bright idea. One pen is all I need at this time until fall when I will move my new layers into the hen house why move the dirt out I will just close off the pen and grow garden in this pen and this fall after I have harvested my vegetables I will turn the hens back to the pen and they can have the pleasure of harvesting the rest. I have cucumbers , squash, tomatoes zinnias and marigolds growing in my chicken pen garden and the plants look great and The chane link fence is made to order for the tomato and cucumber plants to vine on. Do you think any of these plants will be harmful to the chickens when I turn them back in to graze?