Many gardeners struggle to keep the wasp population in their gardens under control. Flowering plants and herbs like rhododendrons, Queen Anne's lace and even rosemary can attract hordes of wasps, which makes it difficult to perform basic maintenance tasks in the garden. Rather than using wasp traps or commercial insecticides to control the wasp population in your yard, try planting a few wasp-repellent plants and flowers. Certain wasp-deterrent plants are a natural way to repel wasps without killing them or harming your other plants with the application of pesticides.
Marigolds are one of the most well-known insect-repellent flowers. These flowers are effective in repelling insects, as well as deer and rabbits, because they have a very pungent odour that deters rather than attracts insects. The more strongly scented varieties of marigold such as French and Mexican marigolds are the most effective in repelling wasps and other insects, but be careful where you plant these flowers. Marigolds can have a detrimental effect when planted near some plants like beans and cabbage.
Feverfew, also called featherfew and bachelor's button, is a flowering plant that has medicinal uses as well as being a natural insect deterrent. This plant has serrated green leaves, white daisy-like flowers, and can grow as tall as 2 feet. Feverfew can be installed in your garden as a companion plant to draw wasps away from particular flowers. Plant feverfew seeds in the early summer in full sunlight. These plants grow quickly and reseed themselves to return year after year.
Bees and wasps are drawn to showy flowers, particularly those that are purple and pink in colour. One way to keep the wasp population down in your garden, other than planting certain flowers to deter them, is to plant flowers that will attract hummingbirds. Tubular and brightly coloured flowers like columbines, day lilies and petunias will draw hummingbirds to your garden. Having hummingbirds in your garden will provide competition for wasps and bees and they will not be able to get at your flowers quite so easily.
Plant a Wasp Garden
Keeping wasps away from your garden entirely is not a realistic goal and, in fact, it should not be your goal because wasps and bees play an important role in the process of pollination. Consider dedicating a portion of your yard or garden to the type of plants and flowers that wasps favour. Plant rhododendrons, flowering rosemary bushes, yarrow and sweet fennel in your wasp garden. By keeping all of these plants in one area, you can attract wasps to these plants and, ideally, get them to leave your other plants alone.
Herbs as Wasp Repellent
There are few flowers that are known to be effective as wasp deterrents, but several herbs can be useful in deterring wasps. Citronella grass and lemon grass are frequently installed in the garden as companion plants for flowers that wasps tend to visit. These plants help to keep their companion plants healthy while also limiting the number of wasps that come by. Wormwood and mint are two other types of plants that act as natural wasp repellents and can be used as companion plants or as border plants for your garden to help deter wasps.