If you let your houseplants "vacation" on the back deck or front porch this summer, then by early September, it's time to start getting them ready to move back inside for the winter.Because conditions differ widely between the inside and outside of your home, a gradual reintroduction to the indoors is best. Sudden changes in temperature, light, and humidity can be traumatic to plants, resulting in yellowed leaves, dieback, wilting and even death.First, get them ready for the move indoors. Clean ...