More than Mary growing

Nah they wont affect each other beyond environment

I've heard passion fruit can turn weed plants Purple. I'm talking more in that way will plant effect the crop in a positive way

I've done limes, lemons, bananas, numerous types of lettuce & spinach and tomatoes and have never had any pollination issues. Light intensity and duration will probably be a compromise for some plants. I generally pick what is going to be my primary crop and do everything the best I can for it. Any other plants are along for the ride but I do the best I can raising and lowering plants or adding shade screens to keep everyone as happy as possible.