Whatever type of pepper you select, one way to make them grow better is to plant them with beans. For instance, for better homegrown tomatoes, experts advise planting basil, borage, or carrots alongside them to deter pests, improve drainage, and boost their flavor. Dwarf french beans make great companion plants for peppers because they fix nitrogen into the soil, which encourages a greater number of fruits to grow. That said, if you erect a trellis nearby to allow the beans to wind through them, they won't overshadow the peppers. Meanwhile bush beans are ideal for planting with peppers because they flourish at the base and don't grow tall.