Before bringing any plants indoors, check thoroughly for pests. Small populations of insects, such as mites and aphids, can be dislodged by spraying the foliage with a hose. If the insects are found in the soil, soak the entire container in lukewarm water for 15 minutes. Plants with a heavy infestation may be better off discarded.
Once moved indoors, continue to monitor for pests to prevent spreading throughout the house. Plant growth will slow substantially indoors and will therefore require less water and fertilization. Most houseplants will benefit from receiving water only when the soil surface is dry. Fertilization will likely not be necessary until spring.
It is best to help plants adjust to the lower light conditions indoors gradually to prevent leaf drop. Initially, place plants near windows with the brightest light. Over several weeks move the plants further away until they’ve reached the desired location. Supplemental lighting can be provided with grow lights. Avoid cold drafts from doors and windows and heat from air vents. These extremes can put plants under stress.
Many houseplants come from tropical locations and favor humid conditions. Kitchens and bathrooms tend to be more humid areas inside the home. If space and lighting permits, this may be a good location for your plants. You can increase humidity for your plants by using a humidifier or grouping multiple plants together creating a microclimate. (Cynthia Domenghini)