Hardy geranium is a term that was invented to distinguish the geranium from the pelargonium, which is often called a geranium. Hardy geraniums are perennials and more cold hardy than pelargoniums, tolerating winter temperatures to -20 degrees Fahrenheit. Everblooming varieties bloom repeatedly through the summer and re-bloom in the fall. Everblooming hardy geraniums grown in USDA zones 3 through 8 do not need to be dug up and stored over the winter, but they do need protection from hard frosts.
Things You’ll Need
- Pruning shears
- Dried leaves or straw
Garden-Grown Hardy Geranium
- Use your pruning shears to cut the geranium to half its size. Just lop off the top of it. It will grow back in the spring.
- Place a 4-inch pile of organic mulch over the geranium.
- Cover the mulch with an equal amount of dried leaves or straw.
- Rake back the leaves and mulch and discard them after all danger of frost has passed in the spring.
Potted Hardy Geranium
- Cut the geranium down to half its size. Use your pruning shears to chop off the top half of the plant.
- Water the geranium well, allowing the container to drain completely.
- Store the potted geranium indoors in an area that receives sunshine and remains 65 degrees F. Water it when the soil dries almost completely.