Summer evenings on the terrace or in the garden quickly turn into a bit of a battleground when mosquitos drop in. We light scented candles, spray insect repellents, and rely on roses or geraniums to act as screens… with little result. Yet another flower, yellow and bright, is indeed gaining ground among gardeners seeking a more natural solution.
This plant is the calendula officinal, or calendula (Calendula officinalis), known for its yellow-orange blossoms and cosmetic uses. Spanish and French gardening sites list it among flowers that help repel certain insects, mosquitoes included. Calendula does not replace a skin repellent, but it can clearly help lower the mosquito pressure around the home. It still requires proper use.
Calendula officinal and mosquitoes: what this yellow flower really releases
Calendula emits a resinous scent that is fairly pronounced, especially when the flowers or foliage are crushed. According to several popular articles, the plant produces compounds close to the pyrethrins family, natural substances known to disrupt the nervous system of certain insects. Result: these odors can help keep mosquitoes, including the tiger mosquito, a bit farther away from the areas where the plant is planted.
Experts nonetheless remind us that calendula does not act as a magic barrier. The effect is space-limited and depends on wind, the number of plants, and other measures taken around. The value of calendula lies precisely in its dual role: a decorative flower that is very easy to grow and a discreet ally for reducing the presence of mosquitoes near summer living areas.
Where to install calendula in the garden, on the terrace or the balcony
For calendula officinal to be truly useful, placement counts as much as quantity. Gardeners recommend lining up pots or planters near French doors, beneath bedroom windows, around the outdoor dining table, or next to the sun loungers. Each passage, every breeze helps to diffuse the odors that bother the mosquitoes.
The closer the plants are to the areas where people settle, the more noticeable the effect. In gardens, calendula also grows very well in the ground, along a path or at the foot of the terrace. Many people pair it with aromatic plants such as lavender, rosemary, mint, or the scented pelargonium to create a kind of fragrant corridor throughout the blooming period, from June to September.
Properly cultivating calendula officinal and adopting the right anti-mosquito habits
Good news for beginners: calendula is among the easiest annuals to succeed with. The National Horticulture Society of France notes that it can be sown from March to May, in place or in plug pots, in ordinary soil. It likes sun but tolerates partial shade, and it mainly flowers from June to September with regular but moderate watering.
To ensure calendula truly helps limit bites, several specialists remind that it must be integrated into a broader strategy. In other words, we rely on the plant’s scents, but we primarily remove everything that attracts mosquitoes near the home.
- Regularly drain all standing water in saucers and buckets.
- Clean gutters, watering cans, and poorly sealed rainwater collectors.
- Group several calendula, lavender, or mint pots near resting areas.
- In heavily infested zones, supplement with mosquito nets or appropriate skin repellents.
