Bit of spit and a rub
If possible take the entire blind down. Roll the blind to it's full open length. Spray with diluted chlorine bleach and scrub the mold and mildew off. Allow to fully dry, then rehang the fresh clean blinds.
Use a bathroom mold and mildew cleaner, or clorox wipes, then condition your vinyl.
You can buy anti-mold spray. Spray on then wipe off.
A power washer on it's own may not be able to clean all the mold off of house siding. It would be best to use a power washer that allows soap to be added. Instead of soap add an anti-fungal chemical that should help clean the mold better.
scrub it off w soap
Try some kaboom, it is made to tackle mildew in showers so it should do ok on mold too.
Mold and mildew have many similar characteristics, but they are different types of fungi, and are often different in color and texture. Mold and mildew are often mentioned together as they can both grow in many of the same moist and warm locations. However, mildew is often found more often than mold in showers, paper and fabrics and mold is usually found more often than mildew in foods. They can sometimes be difficult to tell apart as they both spread out from spores. Mold is often black, green, red or blue in color while mildew is usually gray or white. The two main types of mildew are powdery and downy. Powdery mildew is commonly found on roses and other flowering plants. Powdery mildew is created by an ascomycota type of fungus. Downy mildew is from the oomycota type of fungus and is found in agricultural products such as grapes and potatoes. Both mold and mildew thrive in damp environments, so keeping areas dry is the main preventative measure to help eliminate the fungi. Bathrooms are a prime source of mold and mildew as not only are they often damp, but they also usually do not have a lot of ventilation. Some molds have toxins called mycotoxins that some people may be allergic to. Symptoms of a mold allergy may include headaches, Asthma and coughing. Irritation of the eyes and throat may also occur as a result of breathing mold toxins. Molds are not always harmful; the antibiotic penicillin was created from the mold of the same name. Moldy food should not be eaten. A mildew infestation on paper and some fabrics cannot be scrubbed off, but a mildew remover can usually get rid of mildew on harder surfaces such as surfaces in bathrooms. Some mold and mildew removal products should not be used by asthmatics or in an area that is not well-ventilated. Bleach solutions are often effective in killing both mold and mildew.
I would use alcohol then re-due whatever the mold covered.
Wash off as much of the mold and mildew as you can--use white vinegar in the water, or put some baking soda in the water. Then, let the futon sit outside in the sun for a day or so.
you can get good cleaners off amazon
Mold and mildew can be removed from fiberglass fairly easily. For a do-it-yourself solution, mix a quart of household bleach with four quarts of warm water, and let the mixture soak on the mold for 15 minutes before rinsing it off. For a store-bought cleaner, standard bathtub cleaners such as Comet are effective at removing mold and mildew.