Any night now we could have a killing frost...it's time to take cuttings, and bring tender plants indoors to overwinter in the greenhouse, house, or unheated porch.
I keep this to a minimum, figuring it's often best to start fresh next April, plus I have a small house...but I can't abandon the scented-leaf geraniums I'm nurturing into decent-sized shrubs, the aenoiums, agaves and other non-hardy succulents in pots that are fairly easy to carry in now, and back outside come March.
All these plants will appreciate as much light as you can give them over the winter. Water sparingly, and expect leaf yellowing and drop, legginess, and possible pest infestations... They don't like the heat, the dryness, the lack-of-bright light in the house...but they'll survive.
You may need to cut or pinch them way back, especially the leggy aeoniums, before you move them back outdoors. But you'll start out with a nice, big plant that'll recover quickly once it gets back outside come spring. And in the meantime, your home is nicely greened up - I especially love having the spicy scent of lemon, lime, and peppermint-scented geraniums perfuming the house....how could I abandon any of these favorites to be decimated by first freeze??