How Humidity Affects Fruit and Vegetables - Smart Fog (2024)

If you work in a grocery store, supermarket, farmer’s market, convenience store, or any other industry that sells or otherwise handles fresh produce on a regular basis, you should pay close attention to the humidity level. Humidity – the amount of moisture vapor in the air – plays a direct role in the shelf life of fruits and vegetables. Turning a blind eye to this measurement could result in spoiled produce, which is something no store owners wants to see.

Now for the million-dollar question: how does humidity affect fruit and vegetables? The level of airborne water vapor affects produce in several different ways, one of which is the potential for wilting. Ever place a head of iceberg lettuce in your refrigerator only to discover that it’s wilted just several days later? This is caused by exposure to low humidity. When leafy greens are stored in environments characterized by dry air, the moisture content within the greens evaporates into the air; thus, causing them to wilt.

Some of the produce that’s best stored in environments of 90% relative humidity (RH) or higher include asparagus, apples, broccoli, Brussels sprouts, cabbage, carrots, cauliflower, celery, collards, corn, grapes, kale, leeks, lettuce, parsley, pears, peas, radishes, rhubarb, rutabagas and spinach.

But overly humid environments can prove equally as damaging to certain types of fresh vegetables and fruit. When produce is exposed to humid environments, it will become soft, soggy and eventually rot. This is particularly problematic for fruits such as strawberries, blackberries, blueberries and peaches. A good rule of thumb is to store leafy greens that won’t wilt in high-humid environments and fruits and vegetables that will wilt in low-humid environments.

Furthermore, humidity promotes the growth of mold. A bag of strawberries may last for several weeks when stored in a humidity-controlled environment. If they were stored in an environment with high humidity, however, they may spoil within just a couple days.

A report published by Jeannie Nichols of Michigan State University states that “Fruit and vegetable crispers are designed to maintain a higher humidity than the rest of the refrigerator, so your fresh produce lasts longer. But different types of produce have different storage needs. That is why some refrigerators give you the ability to control humidity levels by increasing or decreasing the air flow permitted into the storage bins.”

How Humidity Affects Fruit and Vegetables - Smart Fog (2024)

FAQs

How Humidity Affects Fruit and Vegetables - Smart Fog? ›

A good rule of thumb is to store leafy greens that won't wilt in high-humid environments and fruits and vegetables that will wilt in low-humid environments. Furthermore, humidity promotes the growth of mold. A bag of strawberries may last for several weeks when stored in a humidity-controlled environment.

How does humidity affect fruit? ›

Now, if fruits and vegetables are stored in an environment with low humidity, they may begin to wilt sooner than expected. As previously stated, objects – including produce – will dry out when exposed to low humidity. The air causes the moisture content in fruits and vegetables to evaporate, resulting in wilting.

What is the humidity for fruit and vegetables? ›

Keep things dry, below 85 percent humidity, for pumpkins, squash, onions and garlic. Fruits that like high humidity include apples, sour cherries, peaches, pears, plums, apricots, avocados and berries, while a medium level is recommended for grapes, sweet cherries, melons and citrus fruits.

How does humidity affect the ripening of fruits? ›

Bananas ripened at lower relative humidity levels showed significantly less weight loss per day than those at higher relative humidity levels. The weight loss during ripening is an important factor, which adversely affects the appearance, flavour and weight of fruit.

How does high humidity affect plants? ›

When conditions are too humid, it may promote the growth of mold and bacteria that cause plants to die and crops to fail, as well as conditions like root or crown rot. Humid conditions also invite the presence of pests, such as fungus gnats, whose larva feed on plant roots and thrive in moist soil.

How does humidity affect food? ›

The humidity in the storage environment should be low. If dried foods pick up moisture from the storage area, molds and bacteria can grow. This can lead to spoilage and illness. Moisture can also lead to the breakdown of some packaging materials (paper degradation and metal rusting).

What are the effects of humidity? ›

Humidity can affect human health because it affects our thermal comfort - in other words, whether we feel too hot or too cold. When the weather is warm and humidity is high, the body finds it difficult to keep cool, because it's harder to remove heat via evaporation of sweat into the air..

Is humidity good or bad for vegetables? ›

Less air flow means higher humidity. Essentially, veggies like high humidity and fruits like low humidity. Leafy greens tend to fare best with higher humidity and the coolest conditions.

What is the best humidity control for vegetables? ›

As a general rule of thumb, use the low-humidity setting for anything that rots easily. That means apples, pears, avocados, melons or stone fruits. The high-humidity drawer is great for anything that wilts—think thin-skinned vegetables like asparagus or leafy vegetables like greens.

What is the best humidity for growing vegetables? ›

The optimal relative humidity level for the majority of plants is around 80% (usually 65-75% during the night and around 80% in the day). If the humidity level increases or drops, your plant's physiological processes are likely to slow down, causing slower growth and lower quality yield.

Which vegetables need high humidity? ›

High Humidity – store leafy vegetables such as spinach, lettuce and thin-skinned fruits and vegetables like strawberries, raspberries, and grapes. Low Humidity – store thicker-skinned fruits and vegetables like onions, peppers, and tomatoes. Do not store apples and bananas together.

Does zucchini like high or low humidity? ›

But different fruits and vegetables have different needs – zucchini and green beans like a warmer environment with higher humidity, while peaches and pears prefer a colder one with lower humidity.

What are the factors that affect the maturity of fruits and vegetables? ›

There are many pre- and postharvest external and internal factors that affect the quality of mature fruit vegetables. They include temperature extremes, physical damage, water loss, physiological disorders, and pathological disorders. provide shading for developing fruit.

How much humidity is bad for plants? ›

Humidity is a measurement of water vapor in the air (and is usually the culprit of bad hair days), but it's very important to plants, especially houseplants. Houseplants appreciate a humidity level between 60 and 80%, which would be difficult to maintain for an entire house—even more in the winter when the heat is on.

What humidity do plants like? ›

An ideal humidity level for most adult plants is 60% to 70%. Some tropical plants are used to humidity levels of up to 90%. Many succulents, such as cacti, only need 10% humidity. As a general rule, plants with thicker leaves can tolerate lower humidity levels.

How does moisture affect plant growth? ›

A high water content of the plant is favourable for cell elongation increase in leaf area and fresh weight during the night. Growth also takes place at favourable soil conditions and low evaporation during the day. Dry matter production, for which photosynthesis is the main process, takes place by day only.

Is low or high humidity better for fruit in fridge? ›

As a general rule of thumb, use the low-humidity setting for anything that rots easily. That means apples, pears, avocados, melons or stone fruits. The high-humidity drawer is great for anything that wilts—think thin-skinned vegetables like asparagus or leafy vegetables like greens.

Does humidity cause fruit flies? ›

Fruit flies are attracted to moist environments, so one of the best ways to prevent them is to control indoor humidity. One way to do this is to use a dehumidifier in your home. Dehumidifiers help to remove excess moisture from the air, making it less hospitable for fruit flies.

How does humidity affect the rate of decay? ›

Research on other materials supports the theory that hotter, moister environments cause faster decay. It also reinforces that, although relative humidity levels contribute to chemical decay of materials, temperature is the more potent factor.

Do berries need high or low humidity? ›

Besides bananas and avocados, examples of other ethylene-releasing produce that you should store in your “low-humidity” drawer include: apples, apricots, blueberries, cantaloupes, cranberries, figs, grapes, honeydew, kiwi, mangoes, peaches, pears, plantains, and plums.

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