Caladiums are tropical plants that are native to South America. In their natural habitat, they experience hot and humid conditions year-round. However, in regions with colder climates, caladiums are not able to survive the winter months outdoors.
When temperatures drop below 15 degrees Fahrenheit (or -9 degrees Celsius), caladiums will naturally go dormant. This means that the leaves will die back, and the plant will enter a period of rest. During dormancy, the plant’s energy is focused on its bulbs, which are underground storage organs.
While caladiums may go dormant when kept outside, there are ways to encourage them to continue growing indoors or in a protected environment. Some growers have had success keeping caladiums alive and actively growing all year round, especially if they provide the right conditions.
One option is to bring your caladiums indoors before the temperatures drop too low. This can be done by digging up the bulbs and potting them in containers filled with well-draining soil. Place the pots in a bright location with indirect sunlight. Keep in mind that caladiums prefer temperatures around 70 to 85 degrees Fahrenheit (or 21 to 29 degrees Celsius), so try to maintain a warm environment for them.
Another method is to use a heat mat to provide warmth to the caladium bulbs. Heat mats are specially designed to emit gentle heat, which can be beneficial for tropical plants like caladiums. By placing the pots on a heat mat, you can help simulate the warm conditions that caladiums thrive in. However, be cautious not to use excessive heat, as it can cause damage to the bulbs.
It’s important to note that even with these measures, caladiums may still naturally enter a dormant state. This is their instinctual response to colder temperatures and reduced sunlight. During dormancy, the leaves will wither and die back, but the bulbs will remain alive underground.
If you decide to keep your caladiums indoors during the winter, it’s essential to provide them with proper care. Water the plants sparingly during the dormant period, allowing the soil to dry out between waterings. Once spring arrives and temperatures begin to warm up, you can gradually increase watering and provide more sunlight to encourage new growth.
If you choose not to bring your caladiums indoors, you can still save the bulbs for future use. Before the first frost, dig up the bulbs and gently remove any excess soil. Allow them to dry for a few days in a well-ventilated area. Once dry, store the bulbs in a cool (around 50 to 60 degrees Fahrenheit or 10 to 15 degrees Celsius), dry location for the winter. Check on them periodically to ensure they are not rotting or drying out too much.
While caladiums have a natural tendency to go dormant when temperatures drop below 15 degrees, it is possible to keep them alive and growing indoors with the right conditions. However, it’s important to note that even with careful care, caladiums may still naturally enter a dormant state. By providing warmth, proper lighting, and appropriate watering, you can increase the chances of keeping your caladiums thriving throughout the year.
