Question
Can I overwinter my geraniums in my shed, how do I do this.
Which is the best time to take cuttings and how do I do this.Thanks.

Answer
Sandra, although hanging them upside down in a cool dry location is one option, I always transplant geraniums into pots and allow them to go dormant for the winter.  

When lifting the geraniums from the garden, take as much of the root ball as possible to keep the roots intact. Gently shake the dirt from the roots, and place the plants in a bucket of tepid water to keep the roots moist. Once you have all the plants dug up, tranplant them into 8" pots filled with a fertile potting mix. Keep the pots in an airy location that is kept relatively cool. A basement or semi-heated garage works fine. Do not water them through the winter months. About 4 weeks prior to your last frost, begin watering them every three days until new growth appears.

Once your last frost date has passed, you need to harden the plants off by gradually acclimating them again to the outdoors. Start by placing them on a protected porch, out of direct sunlight, for three hours the first day. Double this for about one week until they are out 24 hours. You can then transplant them back in the garden. Water and fertilize as you would with new plants.

In regard to cuttings, this can be done at any time. Simply cut a tender shoot that is at least six inches long. Remove the lower sets of leaves. Dip the cutting in a rooting compound. You can purchase this product at any garden center. Stick the cutting one inch into a good potting mix. Be sure to thoroughly wet the soil prior to planting. Finally, cover the pot with a clear piece of lightweight plastic.  Place the pot in indirect sunlight on an east window seal or under fluorescent lighting. After two weeks, check to see if the plant has rooted by slightly pulling on the stem. If you feel resistance, remove the plastic covering and be sure to keep the soil moist.  The plant should then be treated as any other seedling.

Good luck, and please write again if I can ever be of assistance.

Regards,   

Mike