Plants can help a little, but no plant will keep mosquitoes out of a Tempe yard by itself. Strong-smelling herbs like lemongrass, basil, rosemary and lavender mask some of the scent mosquitoes follow, but the real fix is removing the standing water they breed in. If mosquitoes are already biting at your Tempe home, call us at (480) 422-8388 or see our mosquito control in Tempe page.
Do Plants Really Prevent Mosquitoes?
Only in a limited way. Mosquitoes find people by the carbon dioxide we breathe out, body heat and skin odor. Aromatic plants add other smells to the air, which can make it a little harder for a mosquito to pick you out, but that effect is weak and stays close to the plant. A pot of basil on the patio table will not protect a whole yard.
Think of plants as a small extra layer, not a defense. In Tempe, where the mosquitoes that bother backyards breed in tiny pools of water, the plants matter far less than the water.
Why do the plant claims online sound so strong?
Most of the claims come from lab tests using concentrated plant oils, not a living plant in a yard. Crushed leaves release more scent than a plant sitting in the sun, which is why the advice often says to rub the leaves between your fingers.
Which mosquitoes are we dealing with in Tempe?
Two groups. Culex mosquitoes breed in stagnant water and are most active at dusk, and Aedes mosquitoes breed in very small containers and bite during the day. Both can be around Tempe from spring through the fall monsoon months, and both need water to complete their life cycle.
Which Plants Are Worth Growing in Tempe?
Pick plants that handle Valley heat and can live on drip irrigation. Here is how the common choices stack up in a Tempe yard.
| Plant | How it does in Tempe heat | Mosquito effect | Best spot |
|---|---|---|---|
| Rosemary | Excellent, very drought tolerant | Mild scent, crush the leaves for more | Planter beside the patio |
| Lavender | Good with afternoon shade and sharp drainage | Mild | Raised bed near seating |
| Lemongrass | Good with regular water in summer | One of the stronger scents, still limited | Large pot by the door |
| Basil | Fair, needs shade and frequent watering | Mild | Pot on the patio table |
| Marigolds | Best in cooler months | Very little proven effect | Borders in fall and spring |
| Catnip | Fair, needs shade | Strong in lab tests, weak in real yards | Shaded pot, away from the cat |
Citronella plants, which are often sold as a mosquito plant, are really scented geraniums and do not handle a Tempe summer well. Most people have better luck with rosemary and lemongrass.
What about plants that hold water?
Be careful here. Plants that collect water in their leaf bases or sit in saucers can become a breeding spot. Empty every plant saucer at least once a week, and do not stand pots in a tray of water. This is the most common way a mosquito-repelling plant ends up making the problem worse.
What Actually Stops Mosquitoes in a Tempe Yard?
Removing water, because a mosquito can go from egg to biting adult in about a week in Valley heat. The single most useful thing you can do is walk the yard once a week and dump anything holding water. We find the same sources again and again across Tempe, from the older neighborhoods near Rio Salado to the homes around The Lakes.
- Plant saucers and pots: tip them out every week.
- Bird baths and pet bowls: scrub and refill every few days.
- Drip irrigation leaks and low spots: a slow leak near a valve box can hold water for weeks.
- Buckets, tarps, toys and tires: flip or store them upside down.
- Clogged gutters and rain barrels: screen or empty them after monsoon storms.
- Unmaintained pools and fountains: keep them circulating and clean.
Monsoon storms make everything faster. After a storm, give the yard a walk-through within a day or two, because a puddle that stays for a week is enough for a new batch of mosquitoes.
How Does Tempe's Setting Change the Mosquito Picture?
Tempe has more water nearby than most Valley cities. Tempe Town Lake, the Salt River channel, canals, golf course ponds and irrigated parks like Kiwanis Park all add moisture to the area, and well-watered lawns and greenbelts can leave shallow standing water behind.
That does not mean every yard has a problem. It means a Tempe yard near the lake or an irrigated greenbelt is more likely to see mosquitoes drift in, so the water you control on your own property matters more. The ZIP codes we see the most calls from are 85281, 85282, 85283 and 85284.
Do Mosquito Plants Beat Other Do-It-Yourself Options?
Some options work better than plants. Here is a side-by-side look.
| Option | How well it works | Notes |
|---|---|---|
| Dumping standing water weekly | High | Stops mosquitoes before they hatch |
| Fans on the patio | Moderate | Mosquitoes are weak fliers, so moving air keeps them off you |
| EPA-registered repellent on skin | High | Follow the label, especially for children |
| Long sleeves at dawn and dusk | Moderate | Simple and free |
| Aromatic plants | Low | A small extra, not a plan |
| Professional yard treatment | High | Targets resting spots and breeding areas |
What Should a Tempe Mosquito Plan Look Like Through the Year?
Mosquito pressure changes with the season, so the plan does too. Here is the rhythm we recommend to Tempe homeowners.
| Time of year | What is happening | What to do |
|---|---|---|
| March to May | Warming weather starts breeding | Clean gutters and fountains, set up plant pots and herbs, check drip lines |
| June to September | Heat and monsoon storms speed up breeding | Weekly water walk-through, plus one more within two days of every storm |
| October to November | Mild evenings keep people outside | Keep dumping water, since biting continues until the first real cold |
| December to February | Activity drops sharply | Good time to fix leaks, regrade low spots and plan spring plantings |
How should I set up my patio?
Put a fan on the seating area, place two or three potted herbs within arm's reach and keep every saucer empty. Sit away from dense, shaded shrubs and ivy where mosquitoes rest during the day. This setup will not stop every bite, but it makes an evening outside far more comfortable.
Where do mosquitoes hide in the daytime?
Under dense shrubs, in shaded corners, behind pool equipment and along block walls where the shade stays cool. These resting spots are where a professional treatment does its best work, because it reaches the adults you will not see on a plant.
When Should You Call a Professional?
Call when you have already dumped the water and still get bitten every evening, when the mosquitoes are biting in the daytime, or when a neighbor's yard or a pond next door is the likely source. A technician can find breeding spots you cannot see, such as a drain box or a covered irrigation valve, and treat the areas where adult mosquitoes rest.
We treat yards across the East Valley, so if you are comparing options you can also read about mosquito control in Mesa, mosquito control in Chandler and mosquito control in Gilbert. For a broader look at what we handle, see our pest control in Tempe page, or request service online.
What Else Should Tempe Homeowners Read?
- Monsoon mosquitoes in Tempe covers what the summer storms do to breeding.
- How long mosquitoes live explains the life cycle behind the weekly water check.
- Fruit flies and gnats helps if what you have are not true mosquitoes.
- Wasp nests in Tempe covers another common backyard pest.
- Pest control for nearby homes: pest control in Mesa and pest control in Chandler.
Frequently Asked Questions
What plants keep mosquitoes away?
Lemongrass, rosemary, lavender, basil, catnip and scented geraniums are the plants most often named. They give off scents that can mask you slightly, but the effect is small, so use them as a bonus on top of removing standing water.
Does citronella work in Arizona?
The true citronella grass is hard to keep alive in Tempe summers. Lemongrass is the better pick for a hot yard and needs regular water in July and August.
Do marigolds repel mosquitoes?
There is very little evidence that they do. They are a nice cool-season border plant in Tempe, but do not count on them for mosquito protection.
Why do I have mosquitoes in a dry Tempe yard?
Mosquitoes need only a bottle cap of water to breed. Check plant saucers, irrigation boxes, gutters and your neighbor's yard, and remember that adults can travel from the lake or a nearby greenbelt.
How often should I empty standing water?
At least once a week, and again within a day or two after a monsoon storm. That timing breaks the life cycle before eggs become biting adults.
Are mosquitoes in Tempe dangerous?
Mostly they are a nuisance, but mosquitoes in Arizona can carry West Nile virus, so it is worth cutting down on bites. Use repellent, keep screens in good repair and let a doctor know if you develop a fever or severe headache after being bitten.
Can you treat my Tempe yard for mosquitoes?
Yes. We service Tempe, including ZIP codes 85281 to 85284, and have been serving Arizona homeowners since 2013. Call (480) 422-8388 or request service online.