7 Plants To Naturally Repel Mosquitos

Living in Spain has many benefits, but unfortunately, the dreaded mosquitos aren't one of them. If you’re based in regions like Andalusia, Valencia, or the Balearics, you already know that mosquito activity skyrockets from late spring through early autumn.

But it’s not just about avoiding itchy red welts. Mosquitos are known carriers of serious illnesses, including Zika, dengue, chikungunya, malaria, and West Nile virus. In recent years, outbreaks have become more common across southern Europe, particularly as climate patterns shift and mosquito species expand their range.

Then there’s the invasive Tiger Mosquito, which has established itself firmly in Spain’s coastal provinces. Its bites can be especially painful — sometimes even requiring a trip to the doctor.

We’ve previously shared advice on how to prevent mosquito bites and how to build DIY mosquito traps. In this updated guide, we focus on another powerful — and natural — tool: mosquito-repellent plants.

These seven plants are easy to grow in Spanish gardens or balconies. Some double up as culinary herbs, while others produce essential oils that actively confuse a mosquito’s ability to find you.

Citronella Grass

Citronella is one of the best-known natural mosquito repellents. This tall, lemon-scented grass masks the scent of carbon dioxide and lactic acid, which humans emit and mosquitos use to locate us.

It’s non-toxic to humans and pets, thrives in sun, and can be grown in pots or directly in garden soil. Keep it near windows, patios, and outdoor seating areas for best results.

Catnip

Often associated with cats, Catnip contains nepetalactone — a compound proven to be even more effective than DEET at repelling mosquitos. One study found it to be 10 times more effective in controlled lab conditions.

Bonus: Catnip is safe around pets and easy to grow in sunny, well-drained spots. It can also be dried and used to make a skin-safe spray.

Lavender

This fragrant Mediterranean native doesn’t just smell good — it confuses mosquitos and moths with its potent oils. Lavender prefers full sun and well-drained soil, making it ideal for the Spanish climate.

Use fresh sprigs in your home, or crush the flowers into almond or coconut oil to apply directly to skin for natural protection.

Basil

Far more than a cooking herb, basil’s aroma interferes with a mosquito’s ability to home in on body scents. You can grow it in pots on window ledges or terraces, and certain varieties — such as lemon basil or cinnamon basil — are especially effective.

Crushed basil leaves can also be rubbed onto your skin as a quick DIY repellent.

Rosemary

With its woody scent and pine-like leaves, rosemary is another sun-loving herb that mosquitos avoid. It also repels cabbage moths, carrot flies, and other pests.

In Spain’s hot climate, rosemary thrives outdoors, though it’s best to bring potted versions inside during colder months in the north.

Lemon Balm

A cousin of mint, Lemon Balm releases a citrusy scent thanks to its high levels of citronellal — the same compound found in citronella. While butterflies love it, mosquitos don’t.

Keep lemon balm in pots (it spreads aggressively) and place it near doorways and gathering spots. You can also rub the crushed leaves on exposed skin for added protection.

Marigolds

Vibrant and cheerful, marigolds contain pyrethrum, a powerful insect deterrent also found in many store-bought bug sprays. They’re perfect for garden borders or balcony planters.

Place them near doors, windows, and even your vegetable garden — their scent also deters insects that attack tomato and pepper plants.

Bonus Tips:

To maximise effectiveness:

• Group mosquito-repelling plants near seating areas and doorways.
• Water in the morning to avoid excess moisture that can attract mosquitos.
• Combine plants with screens, fans, or citronella candles for full protection.
• Use essential oils from these plants with a carrier oil like jojoba or almond oil for skin-safe repellents.

If you’re especially sensitive to bites or have underlying health conditions, it may also be worth considering a private health plan — just in case you have a bad reaction or need fast access to care.

Want peace of mind all summer long?
Check out our Sanitas Top Quantum plan — with full coverage and no co-payments, including treatment for insect bites and tropical diseases. Stay protected while enjoying Spain’s great outdoors.

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