Companion planting takes advantage of the natural growing habits of specific plants when grown in proximity to others. Repelling harmful insect pests, providing shade or adding nutrients to the soil makes specific plants ideal as companions. Technically, companion plants share a mutually beneficial relationship while allies provide protection for another plant; however, the terms are often used interchangeably to refer to groups of plants that thrive when grown together.
Plant peppers with okra. According to the Dallas Morning News, okra shelters peppers from wind and reduces damage to brittle stems.
Grow peppers near tomatoes and basil--they require similar growing conditions and thrive when grown together. Group peppers in twos or threes spaced 1 foot apart in between tomato plants. Sow basil between plantings. Tomatoes provide protection from harsh elements, allowing pepper plants to thrive.
Place peppers near onions, carrots and eggplant as peppers thrive with these companions. Onions and carrots direct-seeded around pepper plants grow quickly, providing a healthy companion, while eggplant helps shield peppers from winds.
Use dill, coriander and buckwheat planted near peppers to reduce damage from European corn borers (ECB). A study published by the University of Delaware Extension concluded that these plants attract predators that destroy egg masses of ECB, thereby reducing insect damage to peppers.