Geraniums, with their brightly colored blooms, are a flower bed staple. Unfortunately, they will not survive outdoors past the first hard frost. However, geraniums can be stored indoors over the winter with minimal effort. There are several ways to do this. Taking cuttings is one of the easiest methods and ensures you’ll have plenty of beautiful, inexpensive geraniums come spring. According to the Purdue University Horticulture Extension, you also can overwinter geraniums by hanging them.
Place 3 to 4 inches of rooting medium in a flower pot or other planting container with drainage holes.
Plant the shoots in the rooting medium, just deep enough that the shoots do not lean or fall over. Water well and cover the container and shoots with a plastic bag.
Place newly potted shoots in a bright, sunny spot.
Geraniums have a tendency to get spindly. To minimize this, pinch back flowers regularly, increase light exposure and add a liquid fertilizer that is low in nitrogen and high in phosphorus.
Geraniums need at least four hours of direct sunlight each day in order to flower. They will grow adequately with less light but will not flower.
Be sure to choose healthy-looking geraniums for storing. The horticulture experts at Purdue University Cooperative Extension say wilted, rotting or discolored plants will not store well.
If using the hanging method, expect most of the leaves to dry up and fall off during storage.