saving for next year
Pelergonium is easily kept for renewing year to year by simple methods.
Its at this time of year when early frosts can spell the difference whether the plant can be saved or not.
A geranium must not be allowed to be affected badly by frost if it is to be brought back next year.
There are different methods employed to bring this about.
One is to bring it indoors to a sunny window and treat it just as you would any other houseplant.
Eventually though, it will give up its flowering and may not survive the low light of winter.
The other method is to remove it from out of doors; its earth removed from its roots, flowers removed and given a place (generally in the basement) where it can remain in a dark, cool, dry environment, on a shelf or hung up. There it sits, left alone, until next February or March when it comes out, has its roots inspected, cut back to about 4 - 6 inches, given a clean pot, fresh potting soil with something between it and the drainage holes, watered to drainage, given the best window for sun, turned every other day a quarter turn, and within 10 days to two weeks, fresh leaves will soon be awakening. There it needs no spritzing of water...as a matter of fact, that can cause its demise. No, left completely alone--free of moisture, free of light, free of any degree of heat which can initiate early growth--which of course, cant be supported in winter.
Toward the time when outside temperatures suggest it can go out into the sunshine, its better to acclimatize it --out during daylight, back inside to avoid the chilly nights letting it enjoy more and more each day until it can be returned to its garden site.
The third method is to take stem cuttings from a healthy plant to increase its number.