There are many plant companion settings. Plants that help one another out by promoting healthier growth, warding off certain pests, and helping keep the soil's pH at a healthy level for the plants around them. Let's look at the Potato's best companion plants:
The potato is helped the most by the horseradish plant. Horseradish helps to increase the disease resistance of the potato plant. Beans, cabbage, and corn help the potato to grow better. The Colorado potato beetle is repelled by tansy, nasturtium, coriander, and catnip.
Potatoes are a great food to grow in your garden as they complement nearly any meal that you can think of. They also make great plants to grow in small amounts of space. There is a guide on growing 100 lbs of potatoes in just 4 square feet of space at: http://tipnut.com/grow-potatoes/ be sure you have a large harvest basket if growing this many potatoes!