Clean houseplants are happy houseplants. I keep my indoor plants clean because they breathe better and look better too. Cleaning houseplants can be done naturally; both larger houseplants and small houseplants. Read below for everything you need to know! Reasons for Cleaning Houseplants1.) They come from the growers’ greenhouses with junk on them. This is commonly due to pesticide spraying, foliage cleaners, condensation dripping from the ceiling