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Caladiums are vibrant, tropical plants known for their colorful foliage and striking appearance. While they are typically grown as annuals in cooler climates, many gardeners want to preserve their beauty for multiple years. Overwintering caladiums is a simple process that allows you to enjoy these plants year after year.
Understanding Caladium Dormancy
Caladiums are native to tropical regions and naturally go through a dormancy period during cooler months. During this time, their foliage dies back, and the tubers become dormant. Recognizing this cycle is essential for successful overwintering.
When to Overwinter Caladiums
The best time to start overwintering your caladiums is after the first frost has killed off the foliage in your area. Typically, this occurs in late fall or early winter. Ensure the foliage has fully died back before beginning the process.
Assessing Your Caladiums
Carefully dig up the caladium tubers, being gentle to avoid damage. Shake off excess soil and inspect the tubers for any signs of rot or disease. Healthy tubers are firm and free of soft spots.
Cleaning and Preparing Tubers
After digging, rinse the tubers with water to remove remaining soil. Allow them to dry in a warm, dry location for several days. This helps prevent mold and rot during storage.
Optional: Treating Tubers
Some gardeners choose to dust the tubers with a fungicide or cinnamon powder to further prevent fungal infections during storage.
Storing Tubers for Winter
Store the dried tubers in a cool, dark, and well-ventilated location. Ideal storage temperatures are between 50-60°F (10-15°C). Use paper bags, mesh bags, or cardboard boxes with ventilation holes to prevent moisture buildup.
Monitoring During Storage
Periodically check the tubers for signs of mold or shriveling. Remove any that show signs of rot to prevent spreading to healthy tubers. Maintaining proper humidity and temperature is key to successful overwintering.
Replanting Caladiums in Spring
In spring, when the danger of frost has passed, prepare your garden bed or containers. Replant the tubers about 2-3 inches deep and space them appropriately for growth. Water thoroughly after planting.
Caring for Replanted Caladiums
Provide consistent moisture and indirect sunlight. Fertilize with a balanced, water-soluble fertilizer every few weeks to promote healthy foliage growth. As the plants grow, you will enjoy their vibrant leaves once again.
Tips for Successful Overwintering
- Dig up tubers promptly after the first frost.
- Ensure tubers are completely dry before storage.
- Store in a cool, dark, and ventilated space.
- Check periodically for mold or shriveling.
- Replant in spring after danger of frost has passed.
Overwintering caladiums extends their life and allows you to enjoy their stunning foliage for many seasons. With proper care and storage, these tropical plants can become a perennial favorite in your garden.