Plants that Repel Insects

Many plants have natural defenses against insects that you can use for your own benefit. Plus, many of these plants have dual purposes-being either pretty or tasty while at the same time helping rid your garden of pests. Here are a few varieties of plants that have been known to either repel harmful insects or attract beneficial ones.

Marigolds

Marigold flowers give off a fragrance that is unappealing to many insects, especially Mexican bean beetles, asparagus beetles, tomato worms, and nematodes. They are easy to grow and should be planted in full sun. They will continue bloom throughout the summer if they are deadheaded. Flowers are available in shades of cream, yellow, orange, burgundy, and bi-colors.

Thai Lemon Grass

Thai lemon grass is not particularly attractive until you realize that it is a natural mosquito repellant. It can grow about six feet tall and is often used in many Thai dishes. Plant it in an area that gets plenty of sunlight and moisture.

Artemisia

Also known as wormwood and mugworts, Artemisia is known for attracting beneficial bugs as well as repelling harmful ones. It is also known as a natural repellant for animals. It is very easy to grow-to the point of having become an invasive weed in some areas of the United States. It prefers a well-drained, loamy soil in a sunny position. However, it is known to be more aromatic if it is grown in a drier soil.

Nasturtium

Nasturtiums are known for repelling white flies, squash bugs, striped pumpkin beetle, and wooly aphids. For best results, plant nasturtium in a spot with average to poor soil that is slightly on the dry side with lots of sun. They tend to grow in areas that other plants will not.

Basil

Basil is a natural repellant of flies, mosquitoes, and asparagus beetles. It prefers a well-drained soil with plenty of organic material such as peat moss, compost, or manure. For the best flavor, be sure to pinch of any flower spikes when they start to form.

Catnip