Houseplants that spend the summer outside need some attention before they're brought back inside for the colder months.
1. Drench the soil - flush out with water the excess be it bugs, minerals, salts
2. Acclimate to less light -- reduce the intake of sunlight
3. Treat for pests -- Use Neem Oil, Insecticidal soap and soil insecticide
4. Groom plants --remove dead blooms, prune and shape
I've been doing this for years and many of my plants are huge. I started the process about three weeks ago and am still at it.