Are you looking for a natural way to control pests and diseases in your garden? Consider planting flowers to repel unwanted pests away without using chemicals. These flowers use their fragrance, colors, or oils to keep bugs away from your crops. If you are new to companion planting, you need to identify flowers that will benefit your garden. These insect-repelling flowers tend to be hardy and have large, bright booms. You can count on them to get rid of insects such as aphids and mosquitos.