My potatoe plants are huge, they are crowding everything! can I cut the plants back? will it stunt the potatoe growth? Also is there a way to get vine veggies( squash, zucchini, cucumbers) to grow in a certain direction? I think I put too may plants in my garden, they are already huge and everything seems crowded! plz help, I would like to be able to harvest everything, but am concerned they will choke each other out if I let them continue till fall!!!

If they are that crowded pull every other plant up or everything will be stunted. They need sun to mature all they are getting is shade.

you're just going to have to thin them out.

And as for the vine plants, just move their branches carefully to the direction you want them to be.

Plants need space, their productivity will only suffer if you cramp them.