The authors recommend future research efforts shift to environments that have the basic indoor process of exchanging air with the outside. Houseplants need to stay clean for these two reasons. List Of Air Purifying Plants Plants Inside Plants Air Purifying Plants The water should be luke warm rather than hot or cold and no soap of any kind is needed. How to clean indoor house plants . You can find the Dr Bronner castile soap that I use here strongly recommend httpsamznto2I3. You can spray your entire plant. Houseplants prefer soft sponges For cloths put away the paper towel and wash cloth. You could also wrap plastic wrap around the base of the plant to contain the soil while cleaning. Which is why its so important for you as a plant mom or plant dad to clean houseplants for them. Youd need close to 10 plants per square foot before potted plants start cleaning the air at almost the same rate its removed via exchange with outdoor air. Keep your indoor plants green ...