Overview of Overwintering Geraniums
Geraniums, specifically pelargonium hybrids, are cherished for their vibrant blooms. While they often thrive as annuals in most zones, gardeners in USDA zones 10 and 11 can enjoy these plants year-round. For those in colder zones, it’s essential to consider how to properly overwinter geraniums to ensure their survival and return in spring.
When to Overwinter Geraniums
The timing of gathering geraniums for overwintering is crucial. Ideal collection occurs in fall while flowers are still blossoming, and temperatures remain mild; this prevents exposure to frost. Waiting too long may result in the plants entering their die-off phase, while collecting too early could mean missing the last bursts of blooms.
Methods for Overwintering
There are several effective methods to overwinter geraniums. One reliable technique is to bring them indoors as houseplants. Ensure these plants have plenty of bright light—preferably from a west- or south-facing window. Alternatively, gardeners can propagate geraniums through cuttings—taking a healthy stem portion and rooting it in soil. Another option includes storing geraniums dormant. By potting the plants ahead of frost and storing them in a cool, dark area, they can be preserved until spring. Regardless of the choice made, successful overwintering hinges on monitoring the plants for pests and ensuring they are healthy before winter sets in.