I need a cleaner(homemade) that will clean vinyl siding,any suggestions would be greatly appreciated?

I have green mossy looking stuff on my vinyl siding (north side),i need to clean it , but dont know what to use any ideas?
Aluminum siding , not vinyl,sorry

Just got a pressure washer for the house. Vinyl siding, Any tips or ideas appreciated.?

I have a 2 story townhouse with vinyl siding and alum gutters and soffits. I purchased a 24 foot telescoping ext. but have never done a house. How about a good wash detergent? Do I actually have to get really close at the top in order to get it clean? Any tips much appreciated….Starman