When a heat wave hits and the temperature soars, it's easy to feel like your house has turned into an oven. Beyond air conditioning or fans, more and more people are looking for ways to improve their home's ambiance. natural solutions to freshen your home without skyrocketing your electricity bill or relying solely on electrical appliances.
Among these alternatives, plants play a very interesting role. They not only decorate and bring life, but certain species can also lower the perceived temperature, increase humidity, and filter the light that enters the house. And here arises the big question: does it really do any good to place leafy plants near the house to cool it down Or is it just a green myth?
How leafy plants refresh the environment
Plants are not mere decorations: they are small natural climate control systems. Through the Perspiration releases water vapor through the pores of their leaves, a biological process by which the water they have absorbed through their roots slowly evaporates and passes into the air.
This water vapor creates an effect similar to that of a humidifier: the air becomes More humid and the wind chill makes it feel lowerYou won't get a sudden drop in temperature like with an air conditioner, but you will get a a cooler, less dry and more bearable environmentespecially in the middle of summer.
Furthermore, the species with large foliage mass and dense canopies (The typical very leafy plants) function as a kind of green umbrella. Their leaves intercept some of the solar radiation, creating shaded areas and They reduce the amount of heat that reaches walls, windows, and floors directly..
That's why the air feels more pleasant in rural or heavily wooded areas than in cities full of concrete, asphalt, and glass. Urban materials accumulate heat, while vegetation helps to... balance the temperature and create cooler microclimates.
It is worth remembering that the effect of plants is primarily of thermal sensation and comfortDon't expect to lower the temperature by ten degrees just by filling the living room with potted plants, but you might notice a difference. Less oppressive rooms, more breathable air, and more comfortable nights to sleep.
General benefits of having plants to combat the heat
Several studies, including NASA's popular work on indoor air quality, have shown that many houseplants are capable of retain contaminants such as benzene or formaldehydeBut in summer, they also offer a number of extra advantages for coping with high temperatures.
On the one hand, by continuously transpiring, the plants increase relative humidity In very dry rooms, which is common when intense heat is combined with fans or air conditioning, this extra humidity makes the air less harsh. It reduces the feeling of dry heat..
On the other hand, many leafy species, especially those with broad leaves, act as a natural light filterPlaced near windows, balconies, or glass doors, they soften the incoming radiation, allowing light to pass through but They reduce the direct impact of the sun and the overheating of the interior.
In addition to this, vegetation contributes to reduce the use of electrical appliancesIt doesn't completely replace air conditioning in extreme climates, but it can help you Turn it on for fewer hours, lower the thermostat a few degrees, or do without it on warm but not extreme days., with the resulting energy savings.
And, of course, there's everything that isn't seen but is noticeable: having plants at home It improves emotional well-being, reduces stress, and creates more welcoming spaces.It's no coincidence that more and more people are turning their living rooms into little urban jungles to feel more comfortable in their daily lives.
Indoor plants that help refresh the house
Among all the available species, some stand out for their ability to humidify the air, create shade with plants, and purify the environmentMany of them are easy to find, hardy, and perfect for those who don't have much experience with plants.
Ficus benjamina: leafy crown and canopy effect
The ficus benjamina, also known as the weeping fig, is one of the most popular indoor trees because it combines large volume of leaves with the ability to improve ambient humidityIts dense canopy acts as a small canopy under which the temperature feels milder.
Like all plants, it regulates its temperature through transpiration, but in this case, having So many small leaves release a considerable volume of water vaporhelping to mitigate the nearby heat. It is ideal in spacious rooms with good lighting but without direct sunlight.
To notice its effect, it is best to place the ficus in a stable location, away from very cold drafts and with moderate but more frequent watering in the warmer monthskeeping the substrate slightly moist without waterlogging it.
Ficus elastica or rubber tree: large leaves that humidify the air
The ficus elastica, popularly known as the rubber plant or rubber tree, is another excellent species for cooling environments. The more developed its leaves are, It stores more water and releases more vapor through the underside.generating a very pleasant feeling of freshness.
It adapts well to interiors with good indirect light and tolerates some shade. Ideally, the soil should remain Slightly humid in summer and somewhat drier in winterIts fleshy leaves also filter particles from the air, making it doubly useful.
Aglaonema: color and freshness in low light areas
The aglaonema has earned a place in many homes because it combines highly decorative leaves, with different shades and patterns, and a high resistance to low light environmentsIt's perfect for corners where other plants would fall apart.
Besides beautifying, this species functions as Humidifier and air purifierproviding gentle humidity that helps to mitigate the heat. It does not require excessive watering: simply keep the substrate moderately moist and avoid waterlogging.
Potted bay leaf: aromatic and humidity regulator
Bay laurel (Laurus nobilis) is not only useful for cooking. Grown in pots, especially on balconies or terraces, it contributes to stabilize air humidity and, with that, to soften the temperature of the nearby areas.
This aromatic plant prefers well-ventilated spaces with plenty of light but no scorching sun during the hottest hours of the day. As an added bonus, it releases a mild aroma that helps repel insectsvery useful when temperatures rise and mosquitoes appear.
Aloe vera: freshness, cleaner air and home remedies
Aloe vera is one of the most versatile plants you can have at home. Its fleshy leaves store a lot of water, allowing it to... to withstand dry environments, help regulate temperature and improve air quality with hardly any maintenance.
If you keep the leaves clean of dust, the plant performs its gas exchanges better, so It refreshes and filters the air more effectively.It needs plenty of light, preferably indirect or with gentle sun, and spaced waterings, every 15-20 days approximately.
Trendy plants that refresh and decorate
In addition to classic species, there's a group of plants that are very fashionable in decoration and also provide added thermal comfort. They usually have large leaves, a lush appearance, and a strong visual presence, so They function as key elements in any room.
Areca palm: light shade and tropical atmosphere
The areca palm is a favorite choice for interiors because it combines a very distinct tropical aesthetic with a large leaf surface and humidifying effectIt can reach up to two meters indoors if the conditions are right.
Its feathery foliage creates light shade and filters the light entering through windows, reducing the intensity of the sun and generating cooler and more pleasant rest areasFor indoors, it is advisable to use a large pot and a well-draining substrate.
Boston fern and other leafy ferns
The Boston fern is one of the best examples of a plant that acts as natural humidifier in dry spacesIts hanging fronds continuously release moisture, making it ideal for rooms heated by the sun.
In general, ferns thrive in environments without direct sunlight, with good filtered light and high humidity. Placed high up or on walls, they create a very dense green mass that It helps keep the environment cooler and purify the air.
Sansevieria or mother-in-law's tongue: resistant and effective
The sansevieria is one of the hardiest indoor plants and also has the unique characteristic of release oxygen even during the nightUnlike many other species, this makes it very interesting for warm bedrooms.
The idea that the sansevieria is capable of attract heat and transform it into energy for its own growthBy accumulating that heat in its rigid leaves, it may end up showing some curling or wilting if it is not properly hydrated, so it is important to water it when the substrate is dry and to spray it with some water during periods of extreme heat.
Pothos or potus: all-terrain purifier
The pothos (or pothus, pothos, telephone plant, etc.) is a very rewarding hanging plant, ideal for beginners. It adapts easily to different light conditions (except intense direct sunlight) and has a good capacity for purify the air and slightly regulate the temperature.
Placing it on high shelves, ledges, or hanging planters allows you to take advantage of its decorative drape while creating a green curtain that filters the light and provides a feeling of freshnessespecially in hallways or passageways.
Ribbon or love bow: mass of leaves and fresher air
The spider plant (Chlorophytum comosum) is easily recognized by its long, arching leaves, usually green with light stripes. It produces a A large mass of foliage in a short time, with very little care.Therefore, it is perfect for those who want fast results.
This plant helps to keep the temperature slightly lower in the immediate environment and is famous for its ability to neutralize common indoor toxic substances. It also looks wonderful at height, in hanging planters or on shelves.
Ficus lyrata and Monstera deliciosa: large leaves that filter light and heat
The fiddle-leaf fig (Ficus lyrata) has become a must-have in interior design thanks to its enormous, violin-shaped leaves. This large leaf surface It acts as a natural shield against solar radiation. and helps the room feel cooler.
The Monstera deliciosa, with its characteristic perforated leaves, serves a similar function. Besides being a decorative icon, it behaves as light filter, sifting the sun's rays that enter through the windows and slightly increase the humidity of the environment.
Calathea: a “living” plant that regulates its transpiration
The calathea is known for moving its leaves in response to light, opening and closing them throughout the day. This behavior allows it to... adjust your perspiration and maintain a constant humidity in the environment, something very valuable in warm corners of the house.
It's an ideal plant for those seeking an exotic and vibrant touch. It prefers indirect light, without direct sunlight, and a slightly humid environment, making it a good companion for other species that also thrive in that atmosphere.
Green solutions around and on the house
It's not all about potted plants inside the living room. Leafy plants near the house, both outdoors and on building elements, can contribute significantly to reduce the heat that penetrates the building and create a fresher, more inviting atmosphere.
Private flower garden: combine many species on a patio or balcony
A very effective idea is to create a kind of "private forest": mixing several species, especially of broad leaves and leafy canopies, in gardens, patios or balconiesThe more plant mass there is, the greater the combined capacity to absorb light and release moisture.
These plant groupings function as a ecological barrier against heatTo maximize the effect, it is important to observe the sun's path at each time of year and place the plants strategically to lengthen the hours of shade on walls, windows and living areas.
Green roof: natural thermal insulation
Another powerful solution is the green roof or living roof. This type of installation can maintain the roof surface. several degrees below that of a conventional roofand significantly increase the humidity of the air directly above, which improves comfort on the upper floors.
By acting as an extra layer of thermal insulation, a good green roof It prevents the house from overheating in summer and helps to retain heat in winter.However, it does require professional execution, with waterproofing systems, drainage, and suitable substrates to prevent leaks and structural problems.
Vertical gardens and climbing plants: walls that don't heat up as much
When horizontal space is limited or the budget is tight, a vertical garden can be a great solution. Covering walls with vegetation transforms those surfaces. They function as insulation, reducing the temperature they transmit to the interior..
Climbing plants on facades or walls also fulfill this role: they cover the concrete and create a layer of shade and air between the leaves and the wall, which It reduces heat and softens the indoor environmentHaving a landscape designer or professional help in designing simple irrigation and drainage systems that minimize the risk of dampness, mold, or leaks.
Other plants that bring freshness to the home
In addition to the species already mentioned, there are other plants with good foliage and a very rewarding growth habit that can also be grown. help lower the perceived temperature by a few degrees at home if they combine well with each other.
Pachira aquatica: braided trunk and wet crown
The Pachira aquatica is famous for its braided trunk and decorative appearance, but it also stands out for its a canopy of leafy leaves that adds moisture to the environmentIt is a tropical plant that, when well cared for, can help to reduce the temperature in the space where it is located.
It doesn't require complicated care: it prefers bright, indirect light, moderate watering, and avoiding both waterlogging and extreme drought. In very hot areas, lightly misting its leaves is beneficial. further enhance the cooling effect.
Areca, ficus and ferns as the backbone of the “fresh garden”
If you really want to notice a change in the perceived temperature, it's worth opting for a group of plants with large volume of leaves, different heights and texturesFor example, combine areca palms, ficus benjamina, hanging ferns and spider plants.
These species, together, generate a considerable mass of vegetation that It increases total perspiration and shade.Compared to a single isolated unit, a well-distributed group in the living room, hallway, or terrace will have a much greater impact on thermal comfort.
Tips for getting the most out of plants in the heat
For leafy plants to truly make a difference in refreshing your home, it's not enough to simply buy and place them. It's advisable to follow a few basic guidelines that They maximize their effect and prevent problems with humidity or pests..
First, it's important to place them near windows or areas with good lightingHowever, avoid direct sunlight during peak hours, especially in summer. Many leaves will burn if they receive direct rays through the glass, losing some of their function.
Second, you have to be careful with watering. Too much water not only It can rot roots and attract fungiIt also excessively increases ambient humidity, which isn't always desirable. It's best to water when the surface of the substrate has dried out and adjust according to the species.
It is also essential to maintain a good cross ventilation in the homePlants cool the air, but it needs to be refreshed to prevent it from becoming stale. Opening windows early in the morning or at night, when the outside temperature drops, helps a lot.
Another key point is cleaning the leaves. Accumulated dust hinders gas exchange and reduces transpiration. Wiping them with a damp cloth from time to time allows the plant to breathe. “breathe” better and perform its function of humidifying and filtering the air more effectively.
Finally, using appropriately sized pots, especially for large plants like areca palms or ficus, prevents them from becoming too small and reduces problems with water stress. Combine them with light curtains, cross ventilation and exterior shading elements Maximize that feeling of a cool home, even on very hot days.
Taken together, this whole arsenal of leafy plants, well chosen and placed both inside and around the home, allows you to transform a stuffy house into a much more bearable space: More shade, slightly more humid air, less heat accumulated on walls and windows, and a general atmosphere of a green oasis. that makes all the difference when summer hits.