Colors of Mold

Colors of Mold

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How many colors of mold do you know? Apart from the black mold which is the most common, there are various other mold colors you may want to know about. Some of the colors include; green mold, yellow mold, pink mold, and white mold. Here’s detailed information to help you understand these molds.

White Mold

White mold is also known as toxic mold. Often, white mold can be thought to be salt deposits that grow on masonry walls as a result of water seeping through can find white mold on any material that’s located in damp and dark areas such as basement walls, the attic, or the crawl space area. The most common white mold found in homes includes Cladosporium, aspergillus, and penicillium.

All Mold are Harmful

It’s worth noting that every mold regardless of color is harmful. In the case of white mold, it’s worth noting that it can either change to other colors such as grey, black, or green or remain white. During its first development stages, detecting white mold can be an arduous task because the spores are usually tiny and can only be discovered under a microscope. White mold can also resemble mildew even though mildew is usually harmless as opposed to white mold.

Pink Mold

Pink mold is not a fungus but bacteria. The scientific name of this bacteria is Serratia marcescens and you’ll often find it in bathrooms. Pink mold often grows in extremely damp, wet, and dark areas such as bathtubs, showers, washbasins, and tile grouts. They often feed in any shampoo and soap buildup or residue in the bathrooms.

Prolonged exposure to pink mold can be hazardous resulting in various health complications in people such as urinary tract infections, respiratory and gastrointestinal problems, pneumonia, endocarditis, and bladder infection. Anybody who encounters the pink mold can be exposed to danger. However, people with compromised immune systems will be at a higher risk. If you have pets, you may want to be on the lookout as well since this mold can affect them.

Green Mold

Green mold is a term used to define any of the numerous species of mold which often create green spores. A big percentage of these species falls within the Penicillium, Cladosporium, and aspergillus. These species may not necessarily have green spores. Green mold is common inside the house. Their growth is facilitated by a combination of organic material, moisture, and warmth. Therefore, should you want to inspect for green mold, you should check it in overly damp areas such as windowsills, bathrooms, attics, and basements. The harmful effects of mold exposure vary depending on the species.

Mold Effects

Some mold types such as Cladosporium, for instance, can infect your skin and in worst cases your brain, while some aspergillus strains can be allergenic, carcinogenic, and toxic. Such harmful mold species will often cause food contamination and various complications. One thing you should understand is that exposure to pathogenic mold may not necessarily cause illness. However, people with weak immune systems, respiratory complications, and allergies are more susceptible to mold based health complications.

Yellow Mold

Yellow mold is a type of fungus that comes in yellow color. This mold will often be found in damp areas as is the case with other types of mold. There are various types of mold which can be yellow with the most common type being serpula lacrymans. This specific mold thrives by feeding on decaying organic materials. Once it perches on a damp wood structure, this mold type can destroy the wood over time making it toxic.

Types of Yellow Mold

Another common type of yellow mold is aspergillus. This type is found indoors where there has been water damage recently. Serpula lacrymans is another common yellow mold which often grows on rotting wood and is likely to cause wood decay. Yellow mold grows in various places such as fermented bread. The aspergillus mold type is notorious for growing on bread and it can come in different colors.

Orange Mold

These mold species are often orange in color. During their early development stages, these mold types will form small spots and later change to orange slime as they begin to mature. Just like is the case with other mold types, the orange mold is often found in humid and overly damp places such as bathrooms. They can also grow on food products such as yogurt, margarine, bread, and wood. Orange mold isn’t hazardous but it can cause destroy food and cause massive damage to house structures.

Brown Mold

Brown mold just as the name suggests is brown. Sometimes it can be dark tanned or even yellow. Brown mold has the appearance of dark patches and is found in various surfaces such as tiles and wood. Some common types of brown mold include chartarum, pithomyces, stemonitis, and aureobasidium. Brown mold isn’t hazardous but they can trigger allergic and asthma reactions in people with compromised immune systems. They can also damage structures.

Varying Colors Similar Concerns

Regardless of the colors of mold, there are, all of them pose the same dangers to your health. Prolonged exposure to mold can cause various symptoms such as skin rash, irritation in the eyes, diarrhea, skin rash, headache, asthma, memory loss, and blurred vision. If you suspect that your symptoms are as a result of mold exposure, take the necessary action as soon as possible to avoid worsening the situation. Take preventive measures such as repairing leaking pipes in your home and ventilating damp areas around the home,

Which is the most Toxic Mold?

Harmful mold is classified into five categories which are; Fusarium, Penicillium, Cladosporium, Aspergillus, and Stachybotrys. Each category contains various mold species with varied dangerous characteristics. Let’s get more details about these mold types.


Stachybotrys is an overly toxic fungus which is also referred to as black mold. Mold species that fall under this mold genus generate mycotoxins when triggered and this can result in numerous health complications. Often, these mold types develop in materials that have cellulose and those that have been damp for a prolonged period. These surfaces include; the gypsum board, cardboards, wood, ceiling tiles, and other organic materials.

Causes Many Diseases

Further, Stachybotrys has been said to cause numerous illnesses, especially in children. Do you have a weak immune system, do you have young children or the elderly in your home. This group of people is often susceptible to diseases, especially if they encounter this mold species. Some of the symptoms you’ll experience from being exposed to Stachybotrys as we’ve seen above include sinus and nasal congestion, respiratory complications, sore throat, chronic fatigue, coughing, pain and aches, and central nervous system complications.


You’ll be surprised to learn that there are approximately 200 known Penicillium mold species found in the soil and the air. The presence of these mold species indicates the presence of high levels of moisture in the surrounding area. This mold type can cause damage to perishable goods fast. Indoors, you’re likely to find this mold type clinging on damp surfaces such as floors, walls, carpets, and wallpapers. Exposure to the penicillium type of mold can result in asthma, nail fungus and infections in the kidneys, liver, and lungs.


Cladosporium is a common mold that falls under the category of dangerous mold. This mold genus comes in various colors such as black, gray, green, and brown. There are up to 40 species of this mold genus. This particular genus comes in various colors and can cause chronic cases of Cladosporium which can generate emphysema and pulmonary edema


Fusarium will thrive even under lower temperatures. Often, this mold genus grows on fabrics and carpets that have been damaged by water. Exposed exposure to this mold type can trigger asthma, mild allergic reactions, and serious respiratory complications. This mold type is usually orange in color. Fusarium can cause various types of gastrointestinal complications and gas been associated with some female reproductive system related complications.


Aspergillus is the most dangerous among the mold groups included here even though it’s the least serious. There are 200 species in the Aspergillus mold family. However, only 16 out of these can cause diseases in people but they aren’t fatal. If you notice this type of mold, don’t ignore it. Rather take action to eliminate it because prolonged exposure can cause severe inflammation of the lungs and respiratory infections. It’s worth noting that toxic mold generates chemicals during their development stages. These chemicals are poisonous and very dangerous to human health.


Mold grows within our midst and while there’s nothing much we can do, it’s important to take preventative measures to avoid the consequences that come with prolonged exposure to mold.

There are many ways of preventing and eliminating mold from your home. It’s worth noting that mold often thrives in damp areas and you need to keep your home and the surrounding areas as dry as possible. If you notice mold in your home, you should call in a mold professional to inspect the problem and recommend the best eradication method. Don’t wait until it’s too late. Take action now and guarantee your family a healthy environment.

My name is Isabel and welcome to Blooming Air I created Blooming Air to be a place where homeowners can keep their homes healthy for them and their families with high-quality air units.