Mosquito-Repelling Weeds That you can Plant this Spring in your Backyard

Claude Nelson
By Claude Nelson March 23, 2015 14:34

Mosquito-Repelling Weeds That you can Plant this Spring in your Backyard

Mosquitoes kill more people every year than any other creature (including humans-murderers). And every person who prepares for an epidemic breakout should take into consideration at least some protection against these disease carriers.

I’m not going to state that this article in completely about preparedness. Nobody likes mosquito bites. Few insects can ruin a pleasant evening outdoors as quickly or completely as mosquitoes.

But as a prepper I’m also concern about epidemics. And while mosquitoes cannot transmit blood-borne diseases (like HIV, Ebola or Hepatitis) they can transmit a wide range of other life-threatening diseases:

  1. The most common and powerful diseases associated with biological weapons: Anthrax, Plague, Smallpox (Read more: The Most Common Biological Weapons and Antidotes)
  2. West Nile Virus (WNV) – can be transmitted to people, horses, and birds. It is the most commonly reported mosquito-transmitted disease in USA. Most people infected with West Nile virus show no symptoms or flu-like symptoms, but some – primarily elderly – have more severe illness (which can even lead to death in some cases). There is no vaccine to prevent or medicine to treat WNV.
  3. Encephalitis (some forms) – usually transmitted by the Tree Hole mosquito.
    • Equine encephalitis – children, particularly those under 12 months of age, are affected more severely than adults and may have permanent neurologic damage. (3% death rate)
    • LaCrosse encephalitis – occurs most often in the upper midwestern states (Illinois, Wisconsin, Indiana, Ohio, Minnesota, and Iowa). Most cases are seen in children under age 16. Severe complications include seizure, coma, and permanent neurologic damage.
    • Louis encephalitis – elderly adults are at highest risk of severe disease or death.
  4. Chikungunya – confined to the southeastern United States, Chikungunya manifests with excruciating joint pain. Although rarely fatal, the symptoms are debilitating and may persist for several weeks. There is no vaccine and primary treatment is limited to pain medication.
  5. Malaria – although controlled in the USA, the influx of illegal immigrants may lead to some small outbreaks in the Southern States. (More than one million deaths every year – wordwide)
  6. Other diseases commonly transmitted by mosquitoes are Dengue (southern states – especially Texas), Jamestown Canyon Virus (JCV – mild symptoms) and Heartworms (dogs and cats – all over US – can be deadly)

bug mdHere are some of the most effective mosquito repelling plants which are easy to grow in most regions of the US:

Mosquito Shoo Geranium

Mosquito Shoo GeraniumWhen a leaf is crushed and rubbed on the skin, it smells wonderful and helps naturally repel mosquitoes. You can also just cut some and place them on your doorstep to repeal mosquitoes from entering your house, and enjoy a summer breeze.

Plants respond well to pruning, so don’t be afraid to cut branches for inclusion in summer bouquets, especially if you are dining outdoors. The fragrance will be a welcome addition, blending with more floral scents. In addition, the way the leaves are attached to the stem means that one branch of mosquito plant will help hold other flowers in place in the vase.

Growing upright to 2 to 3 feet in height, they can be used as a summer border of a garden.

Bog-myrtle (or Sweet Gale)

Bog-myrtleThe foliage has a sweet resinous scent and is a traditional insect repellent, used by campers to keep biting insects out of tents.

It is also a traditional component used in perfumery and as a condiment.

The plant has been used by natives of North-America as a traditional remedy for stomach aches, fever, bronchial ailments and liver problems.

Caution: the plant should not be consumed by women who are, or might be, pregnant.

How to Grow Bog Myrtle

Barely cover seeds and cold stratify for six weeks at 41F/5C , although some of the seeds will germinate without any cold stratification. Bog myrtle can grow in full sun to deep shade but does not like heat. Becomes a shrub about 4-6ft tall.

Plants tend to sucker after they’ve grown a few years. You can dig out a sucker and plant that in a separate area to create more plants. Plants can be male or female and won’t produce fertile seeds unless both are present. This plant will grow better in the north half of the US. (Source)


HorsemintAlso known as Beebalm, Horsemint is an adaptable perennial plant which repels mosquitoes. Horsemint is a fast growing, shade-tolerant and drought-resistant plant which reaches a height and width of 2 – 3 feet. It does well in dry, sandy soil and can tolerate salty conditions, which is why it is often found in coastal and beach areas. Midwest and Eastern growing zones are favored for growing horsemint. (Source)

Because the mosquito repellent substance is actually the essential oil embedded in the leaves, it is not enough to just plant the Horsemint close to your house in order to repeal mosquitoes. It will have some effect, because the oil evaporates (very, very, very) slowly from the plants, but it won’t be enough. You’ll have to crush the leaves and incorporate them in your homemade candles or if you are barbequing outside, just burn a few leaves.

Native Americans used the (dried) leaves to make herbal tea (antiseptic). Horsemint is actually the natural source of the antiseptic compound thymol – the primary active ingredient in some modern commercial mouthwash formulas.


Citronella grassCitronella Grass is the most popular cultivated plant used for repelling mosquitoes. Its oil, citronella oil, is the primary ingredient in most natural insect repellents sold in stores. Products applied to the skin are most effective.

Despite many claims, citronella plants do not effectively repel (hungry female) mosquitoes. The plant doesn’t release enough oil into the air to effectively repel insects.

But you can crush the leaves and rub the juice on your skin after diluting it in 5 times the amount of water (otherwise you might get an allergic reaction). On a deck or patio, a raised oscillating fan can protect a large area. But the effectiveness of Citronella Grass is no match for other plants in this article.


BasilBasil has essential oils that can be extracted and used as a spray to repel mosquitoes. It is also a medium-low effective repellent when grown nearby.

Basil is one of the few herbs that give off a scent without the leaves having to be crushed or physically disturbed. There are many varieties of basil, but the ones with the most mosquito-repelling powers include lemon basil and cinnamon basil.


AgeratumAlso known as Flossflowers, Ageratum emits a smell which mosquitos find particularly offensive. Ageratum secretes coumarin, which is widely used in commercial mosquito repellents.

Ageratum is a low-lying annual ornamental plant which reaches heights of 8 – 18”, and is easily recognized by its blue flowers, although there are varieties with pink, white and violet blooms. This plant will thrive in full or partial sun and does not require rich soil. It is often displayed in rock gardens where low-lying plants are favoured.

Although the leaves of Ageratum can be crushed to increase the emitted odor, it is not advisable to rub the crushed leaves directly on the skin.


lavenderMosquitoes and many other insects don’t like the smell of lavender. This trait makes lavender a welcome addition to any garden, especially considering how attractive this plant is when it blooms. Aside from planting lavender around seating areas to deter pests, try making your own natural insect repellent with lavender leaves.


CatnipResearch from the Iowa State University has found that the oil extracted from catnip containing nepetalactone has is nearly 10 times more effective at repelling mosquitoes than DEET.

Catnip is very effective at keeping mosquitoes away. Simply, cut off the flowers and boil them to make a spray.

And if you have cats … they’ll love it! (Video)

How to Make (Easy) Mosquito Repellant Using any of These Plants

Most natural insect repellants are made with essential oils. We can do that, but it is a lot easier to make an infusion. Infusions are much like making tea, boiling water is poured over the herb and the herb/water mixture is then left to steep for 10 to 15 minutes. The remaining liquid is strained and used as the repellant. (see video – with basil, but you can use any of these plants)

In addition, some scientists also recommend vitamin B1 – 25 to 50 milligrams three times a day – or garlic to produce a skin odor that is supposed to naturally repel mosquitoes. It takes about two weeks of regular doses for the B1 to become effective.

simple 2Another thing: The most important mosquito predator is the bat. Some bats can catch up to 600 mosquitoes an hour. In Austin, Texas there is a bat colony, estimated to have up to 1.5 million bats during peak season, that has been estimated to eat almost 10,000 pounds of mosquitoes. Take a cue from the folks in Europe who have been using bat houses to eliminate mosquitoes since the early 1900s. Most bat houses, when placed properly, will be occupied within one year of placement. Think of how many more BBQs and bonfires you’ll be able to enjoy. (Source)

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Claude Nelson
By Claude Nelson March 23, 2015 14:34
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  1. red October 23, 04:04

    None of that grows well here. Basil will, but fizzles if not babied. Best thing is, in the desert, no standing water. Ranchers put top minnows in tanks and tinajas (dirt dams and natural pools) and if the tank is big enough, buy feeder goldfish or catfish and use them. but people with lawns have to water almost daily in summer to keep the grass green. That means mosquitoes.

    In every culture, including bible, bats are protected by law. Dr. Campbell, about 1901, had a majority of patients, mostly children, suffering malaria. It was East Texas and then the Malaria Capitol of the US. He knew that mosquitoes carried malaria, AKA the Roman disease because it was so common in Rome. He undertook a study of how to get more bats to live in the area. Then had to figure out how to keep them. They built wooden towers and some had colonies, too many did not. The county, then the state was paying for this. He found bats water on the wing. they did best where they had at least ten feet unobstructed water surface to drink. That solved, he went on with his studies and new cases of malaria dropped to almost nil. Batcon USA has a lot of great advice for people who want to build housing for bats. Mining concerns are walling off old mines for bats to use.

    Back in Penna, farmers found out the hard way they depend on bats. When White Nose disease kill off 98% of the bats, their crops were devastated for two years. WN was brought to the US by a spelunker who went to Europe and did not clean his boots before coming home. Cousins tell me the porch is important again, just to sit and relax in the evening and water bats chasing moths, corn stalk borers, ear worms, mosquitoes and so on.

    Here, we had a dry summer (no rain from March till September; most of you might call it a drought, we don’t till the cactus shrivels 🙂 and few bats showed up. Farm and Ranch and other fun to visit places (well, fun to me) can special order waterers over ten feet in length with a bat catcher, netting around the inside used to help bats that accidentally go swimming.

    According to an ancient Arabian legend, Jesus’ prayers were being stopped by demons. He needed something fast, smart, and small to dodge the demons. He took a handful of dust and threw it in the air, and created the bat. niio

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  2. DannoBoone July 1, 16:46

    There is an event which happens once or twice a year here on our acreage, usually toward the end of July or early August. One day we can be eaten up by skeeters and the next day one cannot even find a skeeter.

    Large dragon flies come in swarms and fly low over grass and weeds causing the little blood suckers to panic and fly straight up. The dragon flies grab them, suck the liquid out, drop the body and go on to grab another. They do not get all of them, but above the dragon flies are what I would call “swarming” barn and cliff swallows. At
    that height it’s not possible to see the skeeters, but one can see much diving and swerving of the swallows.

    LOVE the dragon flies and swallows just as much as bats!!

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