Mosquito season hits hard in Ontario. Warm weather, high humidity, and plenty of standing water make our region a perfect breeding ground. Many homeowners look for natural ways to keep mosquitoes away, and mosquito repellent plants are often the first idea people turn to.
These plants can help reduce mosquito activity around your deck, garden, and outdoor seating areas. But they aren’t a complete solution. If you want your property to stay truly mosquito-free through summer, targeted mosquito spraying, like the specialized services we offer at Quinn’s Pest Management, is the most reliable way to protect your space.
This guide explains the most effective mosquito repellent plants, how to use them, and when to pair natural options with professional mosquito control for the best results.
How Mosquito Repellent Plants Work
Mosquito repellent plants contain natural oils and scents that mosquitoes find overwhelming. When these plants are crushed, brushed against, or heated by the sun, they release stronger bursts of aroma. This helps deter mosquitoes from landing or resting nearby.
A few things to keep in mind:
• Plants alone won’t eliminate mosquitoes.
• They only protect small, immediate areas.
• You must position them close to human living spaces.
• They work best when combined with other strategies.
If you spend a lot of time outdoors in the evenings, these plants can make your space feel more comfortable. But for cottages, shaded yards, and properties near wetlands, mosquitoes can still be overwhelming even with plants in place.
The Best Mosquito Repellent Plants
Below are the most reliable and commonly used plants that help repel mosquitoes.
1. Citronella (Lemongrass)
Citronella is the most well-known mosquito repellent plant. When the leaves are crushed, they release citronella oil, a natural mosquito deterrent used in candles and sprays.
Best for:
• Pots around patios
• High-traffic outdoor areas
• Sunny, warm spaces where oils release easily
2. Lavender
Lavender offers a strong scent mosquitoes dislike. It’s hardy, drought-resistant, and doubles as a fragrant, attractive addition to your garden.
How to use:
Place pots near doors, seating areas, and along walkways.
3. Basil
Basil’s aroma helps deter mosquitoes and other small flying insects. Unlike many herbs, basil releases scent without needing to be crushed.
Good for:
Outdoor dining areas or gardens where you’re already harvesting herbs.
4. Mint
Mint spreads aggressively and produces a powerful aroma. Mosquitoes dislike its strong oils, especially peppermint.
Tip:
Keep mint contained in pots to prevent it from overtaking garden beds.
5. Rosemary
This woody herb thrives in hot, dry conditions and emits a pine-like smell that helps repel mosquitoes. It can be clipped and tossed onto a grill to produce mosquito-repelling smoke.
6. Marigolds
Marigolds contain pyrethrum, a natural compound used in many insect repellents. Their bright colour also makes them a popular garden addition.
7. Catnip
Studies show catnip can be more effective than DEET in concentrated form. Planted around the yard, it helps discourage mosquitoes but may attract neighbourhood cats.
Where to Place Mosquito Repellent Plants
Strategic placement makes a big difference. To get the most out of natural mosquito control, group plants around:
• Decks and patios
• Cottage docks
• Entryways and screen doors
• Garden seating areas
• Shaded spots that hold moisture
• Outdoor kitchens or BBQ areas
Keep in mind that mosquito repellent plants work only in the immediate area. If your yard borders woodland, marshes, wet grass, or shaded tree lines, mosquitoes can still migrate through even the best plant barrier.
The Limitations of Mosquito Repellent Plants
While mosquito repellent plants are a helpful addition, they come with clear limitations:
1. They only repel. They do not kill mosquitoes.
This means the mosquito population around your property remains the same.
2. They require maintenance and heat.
Plants must be healthy, watered properly, and placed in sunlight for oils to release.
3. They do not protect large areas.
A few pots on a patio will not deter mosquitoes from the rest of your property.
4. They cannot reach mosquito breeding zones.
Most mosquitoes hide in wet, damp, shaded areas like:
• Under decks
• Behind sheds
• Long grass
• Wooded edges
• Damp soil and shaded shrubs
These are exactly the areas Quinn’s Pest Management targets during every treatment using professional-grade equipment and safe application methods.
When You Need More Than Plants: Professional Mosquito Control
If your yard feels unusable in the summer, mosquito repellent plants can only soothe the edges of the problem. For real relief, homeowners often need professional mosquito spraying.
At Quinn’s Pest Management, we use targeted mosquito spraying, not fogging, because fogging releases unnecessary chemicals into the air and onto flowers that pollinators rely on. Targeted spraying treats the specific shaded and damp areas where mosquitoes actually live and breed, keeping your outdoor spaces comfortable and safe.
Why Professional Mosquito Spraying Works Better
- Targets breeding zones.
We focus on shaded, wet, and hidden spots mosquitoes rest in during the day. - Protects the spaces you actually use.
Patios, outdoor kitchens, decks, and cottage docks get extra attention. - Safe once dry.
We keep windows and doors closed during application. Once dry, treated areas are safe to use normally. - Won’t harm your garden.
We avoid flowers that attract pollinators like bees. - Top-quality equipment.
We use a truck-mounted power sprayer with a 400-ft hose, allowing precise application far beyond what handheld sprayers can reach. - Lasts several weeks.
Treatments naturally break down over time, so we offer recurring packages or one-off event spraying before weddings, parties, and gatherings.
If you want real mosquito control, pairing natural plants with professional spraying is the best combination.
Learn more:
Visit our Mosquito Control Services page.
Tips to Boost Natural Mosquito Control
Even with the right plants, mosquitoes thrive in certain conditions. These steps help reduce activity:
• Remove standing water around the home.
• Keep gutters clear.
• Maintain short grass.
• Trim overgrown shrubs.
• Use fans on decks to disrupt mosquito flight.
• Seal screens and repair small tears.
For large properties or cottages with heavy moisture, natural methods will only go so far.
When to Call Quinn’s Pest Management
If mosquitoes are keeping you inside or you want to enjoy your deck without constant swatting, it’s time for a professional assessment.
We service:
• Kawartha Lakes
• Peterborough
• North Durham
• Orillia
• Haliburton
• And surrounding areas
Call, text, or email Aidan to get a fast quote.
FAQ: Mosquito Repellent Plants
What are the most effective mosquito repellent plants?
Citronella, lavender, basil, mint, rosemary, marigolds, and catnip are the most common options used to deter mosquitoes naturally.
Can mosquito repellent plants eliminate mosquitoes completely?
No. Plants help reduce mosquito presence in small areas, but they cannot reach breeding zones or large property areas. For full coverage, targeted mosquito spraying is more effective.
Are mosquito repellent plants safe for pets?
Most are safe, but some, like citronella and certain mints, may cause mild stomach upset if eaten in large amounts. Always check plant safety for your pets.