You can also interplant them with clover and lettuce to help confuse insect pests. Plants you can plant lettuce with include beets, carrots, cucumbers, cabbage-family crops, radishes, and strawberries, as they all enhance its growth. Plants your corn with beans and peas , as they add nutrients to the soil. Interplant your carrots with peas, radishes, or sage to improve their flavor- peas also add nutrients to the soil. Onions, leaks and rosemary help repel root maggot flies.
Onions help repel carrot rust flies.
Plant your melons with corn and peas to improve growth and flavor. Nasturtiums and radishes repel cucumber beetles. When you plan your garden, make sure that the following plants are not planted together in the same bed, as they do not complement each other. When you inter-crop your garden, you can also plant in rotation. That means you will plant different vegetables on the same piece of land one after another.