Plants That Repel No See Ums

Planting lavender, marigolds, and basil around your patio creates a fragrant barrier that naturally discourages these tiny biting flies from ruining your evenings. If you are looking for plants that repel no see ums, you have come to the right place. These pests are so small that they can slip through standard window screens, making them a nightmare for anyone who enjoys spending time outdoors during dawn or dusk.

No see ums, also known as biting midges, are not just annoying. Their bites can cause intense itching and swelling that lasts for days. Chemical repellents work, but many people prefer a more natural approach that also adds beauty to their landscape. The good news is that you can fight back without dousing yourself in harsh chemicals.

This guide will walk you through the best botanical defenses. You will learn which plants work, how to use them effectively, and where to place them for maximum protection. By the end, you will have a clear plan to reclaim your yard.

Before you start digging, it helps to understand why these plants work. Most of them contain strong essential oils. These oils release volatile compounds into the air. For us, these scents are pleasant. For no see ums, these same scents are overwhelming and disorienting.

The plants do not kill the insects. Instead, they mask the carbon dioxide and body heat that you naturally emit. When the plant’s scent fills the air, it confuses the midges. They cannot find you, so they move on to an easier target.

Here is the most important thing to remember: simply having the plant in a pot is not enough. You need to disturb the foliage regularly to release the oils. Brushing against the leaves, crushing a leaf, or even watering the plant can help. The more aromatic the plant, the better the barrier.

Lavender

Lavender is a powerhouse in the fight against biting flies. Its calming scent for humans is a strong deterrent for insects. The plant contains linalool and camphor, which are natural insect repellents.

Plant lavender in full sun with well-drained soil.
Place pots near seating areas where you relax in the evening.
Crush a few leaves and rub them on your ankles and wrists for extra protection.
Harvest the flowers and dry them to make sachets for your pockets.

Lavender thrives in dry, sandy conditions. If you have heavy clay soil, consider growing it in raised beds or containers. This plant loves heat, so do not overwater it. Once established, it is very drought-tolerant.

Marigolds

Marigolds are not just pretty flowers. They contain pyrethrum, a natural compound used in many commercial insect repellents. The strong, pungent odor of marigolds is particularly effective at masking the scents that attract no see ums.

These flowers are incredibly easy to grow from seed. They bloom continuously from summer until the first frost. This makes them a reliable and long-lasting addition to your defense strategy.

Plant marigolds along the border of your patio or deck.
Use them in window boxes to create a barrier at entry points.
Interplant them with vegetables to protect your garden time.
Choose French marigolds, as they have a stronger scent than American varieties.

Marigolds are heavy feeders. They prefer rich soil and regular watering. Deadhead the spent flowers to encourage more blooms. The more flowers you have, the stronger the scent barrier will be.

Basil

Basil is a culinary herb that doubles as a pest repellent. The sharp, spicy aroma of basil leaves is highly effective at keeping flies and midges away. It is also one of the easiest herbs to grow, making it perfect for beginners.

You can grow basil in pots right on your dining table. This puts the protection exactly where you need it most. When you brush against the leaves to grab a sprig for your pasta, you are also releasing the repellent oils into the air.

Keep basil plants on the railing of your deck.
Place a pot near the door to prevent insects from entering the house.
Pinch off the flowers to keep the leaves growing and the scent strong.
Make a quick repellent spray by steeping basil leaves in boiling water, then cooling and straining.

Basil needs at least six hours of sunlight per day. It also requires consistent moisture. Do not let the soil dry out completely. If the leaves start to wilt, they will lose their potency.

Rosemary

Rosemary is a woody perennial that offers a robust, pine-like fragrance. This scent is very unpleasant to no see ums and other flying pests. It is also a fantastic plant for grilling, giving you a dual purpose for having it around.

This plant is very hardy and can grow quite large. It makes an excellent hedge or border plant. You can also grow it in a large container and prune it into a topiary shape for a formal look.

Plant rosemary near the grill or outdoor kitchen area.
Toss a few sprigs on the hot coals to release the scent into the air.
Use the cuttings as natural skewers for kebabs, which releases the oils.
Grow it in a sunny spot with excellent drainage.

Rosemary does not like wet feet. It prefers to be on the drier side. Overwatering is the most common reason this plant fails. Let the soil dry out between waterings.

Lemon Balm

Lemon balm is a member of the mint family. It has a strong, lemony scent that is refreshing to humans but confusing to insects. It contains citronellal, which is the same compound found in citronella candles.

This plant is very vigorous and can become invasive if not contained. It is best to grow lemon balm in a pot or a contained bed. If you plant it directly in the ground, it will spread rapidly.

Grow lemon balm in containers to control its spread.
Crush the leaves to release the citronella scent.
Place pots near seating areas and walkways.
Use the leaves to make a refreshing tea that also helps repel insects from the inside out.

Lemon balm prefers partial shade and moist soil. It is very forgiving and easy to care for. Even if you forget to water it, it will bounce back quickly.

Catnip

Catnip is not just for cats. Research has shown that catnip is actually more effective at repelling mosquitoes than DEET. While studies on no see ums are less extensive, the strong essential oil nepetalactone is known to deter a wide range of biting insects.

This plant is very easy to grow and is quite hardy. It can tolerate poor soil and neglect. However, if you have outdoor cats, they will roll in it and crush it. This actually helps release the oils, but it can also kill the plant if they do it too often.

Plant catnip in a hanging basket to keep it away from cats.
Rub the leaves on your skin as a natural repellent.
Dry the leaves and place them in muslin bags to hang around your patio.
Grow it in full sun to partial shade.

Catnip can become aggressive in the garden. It self-seeds readily. To prevent this, cut the plant back after it finishes flowering.

Citronella Grass

Citronella grass is the source of the commercial citronella oil used in candles and torches. Growing this plant gives you a fresh, continuous supply of the repellent. It is a large, clumping grass that can grow up to six feet tall.

This plant is not frost-hardy. In colder climates, it must be grown in a pot and moved indoors during the winter. It thrives in warm, humid conditions and needs plenty of water.

Grow citronella grass in a large pot near your seating area.
Crush the leaves to release the strong lemony scent.
Cut a few leaves and place them on the table.
Use the leaves to make a homemade repellent spray.

Citronella grass is a dramatic plant that adds height and texture to your landscape. It is a great focal point for a patio container garden.

How To Create A Living Barrier

Simply planting these species randomly is not enough. To get the best results, you need to think about placement and airflow. The goal is to create a continuous wall of scent around the areas where you spend the most time.

Here is a step-by-step plan to set up your defense.

Identify your zones: Determine where you sit, eat, and walk. These are your primary zones.
Plant the perimeter: Place the tallest plants, like citronella grass and rosemary, at the back or on the outer edge.
Fill the middle: Use medium plants like lavender and marigolds in the middle layer.
Edge with herbs: Use low-growing herbs like basil and lemon balm at the front or in pots on the table.
Create a walkway: Line your paths with these plants so you brush against them as you walk.
Use hanging baskets: Hang pots of catnip and lemon balm at head height to catch insects that fly at face level.

Remember that wind can carry the scent away. If it is a breezy evening, you may need to crush a few leaves and rub them on your skin for direct protection. The plants are a tool, but they are not a force field.

Maintaining Your Repellent Garden

To keep your plants working at maximum efficiency, you need to keep them healthy. A stressed plant produces fewer essential oils. A healthy, thriving plant releases a much stronger scent.

Water consistently, but do not overwater. Most of these plants prefer slightly dry conditions.
Fertilize lightly. Too much fertilizer can reduce the concentration of oils in the leaves.
Prune regularly. This encourages new growth, which has the strongest scent.
Harvest the leaves. The more you pick, the more the plant produces.

If you live in a region with high humidity, watch out for fungal diseases. Ensure good airflow between plants. Do not crowd them together. Space them out so the air can move freely.

Other Natural Strategies To Combine

Plants are most effective when combined with other natural methods. This creates a multi-layered defense that is much harder for the insects to penetrate.

Consider adding a fan to your patio. No see ums are weak fliers. A gentle breeze from a fan is enough to keep them away. This is one of the most effective physical barriers you can use.

Eliminate standing water. No see ums breed in moist, organic soil and water. Check for any containers, clogged gutters, or wet spots in your yard. Removing these breeding grounds will reduce the population significantly.

Wear light-colored clothing. Dark colors attract insects. Light colors are less visible to them. This is a simple, cost-free way to reduce bites.

Frequently Asked Questions

Do these plants work indoors?

Yes, they can help indoors. Place pots near open windows and doors. However, they are more effective outdoors where there is more air circulation. Indoors, you may need to crush the leaves more often to release the scent.

What is the fastest way to get rid of no see ums?

There is no single fastest way. A combination of removing breeding grounds, using fans, and planting repellent plants is the most effective approach. You can also use a propane mosquito trap to reduce the population over time.

Can I use these plants to make a spray?

Absolutely. Steep a large handful of leaves (basil, mint, and lavender work well) in boiling water for 30 minutes. Strain the liquid and pour it into a spray bottle. This can be applied to your skin and clothing. Keep it in the refrigerator for up to a week.

How long does it take for the plants to start working?

The plants start working as soon as they have mature leaves that you can crush. Young seedlings have a weaker scent. Once the plant is established and you begin to disturb the leaves, the repellent effect is immediate.

Are these plants safe for pets?

Most of these plants are safe for pets. However, marigolds and catnip can cause mild stomach upset if eaten in large quantities. Citronella grass is generally safe but can be toxic if ingested in large amounts. Always monitor your pets and consult your vet if you have concerns.

Building a garden with these plants is a long-term investment in your comfort. It takes a little time to establish, but the payoff is worth it. You will be able to enjoy your evenings outside without the constant buzzing and biting.

Start with a few pots of basil and lavender this weekend. Place them near your favorite chair. You will notice a difference immediately. As you add more plants, the protection becomes stronger. Before you know it, you will have a beautiful, fragrant, and functional barrier that keeps the pests away naturally.

Dont forget to check your screens for holes. Even with a great garden, a tiny gap in a screen can let these pests in. Seal any cracks and keep your doors closed during peak biting times, which are usually right around sunset.

Another tip is to mow your lawn regularly. No see ums like to hide in tall grass and leaf litter. Keeping your yard tidy removes their hiding spots. This works hand-in-hand with your repellent plants to create a less inviting environment for them.

If you have a water feature, consider adding fish that eat insect larvae. Gambusia, also known as mosquito fish, are very effective. They will consume the larvae before they mature into biting adults. This is a natural way to control the population at the source.

You can also use a simple trap made of a bowl of soapy water with a light shining on it. The insects are attracted to the light and fall into the water. The soap breaks the surface tension, so they drown. This is a cheap and effective way to reduce numbers around your seating area.

Remember that consistency is key. A single lavender plant will not solve your problem. You need a collection of plants placed strategically around your space. Think of it as creating a fortress of fragrance. The more layers you have, the stronger your defense.

As the season progresses, keep an eye on your plants. Replace any that are struggling. A dying plant not only looks bad but also loses its repellent properties. Healthy plants are your best allies in this fight.

You might also want to consider using a topical repellent as a backup. Natural options like oil of lemon eucalyptus are very effective. You can apply this to exposed skin for extra protection, especially if you are going into a heavily infested area like a marsh or a wooded trail.

Finally, share your knowledge with your neighbors. If they also plant repellent plants, the entire neighborhood becomes less hospitable to no see ums. A community effort can significantly reduce the local population. This makes everyone’s outdoor time more enjoyable.

With a little planning and some effort, you can win the battle against these pesky biters. Your garden will be a sanctuary, not a feeding ground. Enjoy your evenings outside, free from the constant annoyance of no see ums.