As a gardening and landscaping expert, I can provide you with some insight into the nature of red mandevillas and their ability to come back every year. Red mandevillas, scientifically known as Mandevilla spp., are indeed perennial plants in their ideal growing zones of 9 to 11. However, they are not able to withstand freezing temperatures, which means that in most places in the United States, where winters can be harsh, they are grown as annuals.
When exposed to freezing temperatures, mandevillas are unable to survive and will die off. This is why many gardeners treat them as annuals and replant them each year. However, if you live in a region where freezing temperatures are a concern, there are steps you can take to keep your mandevilla alive and encourage its return year after year.
One option is to bring your mandevilla indoors for the winter. Before the first frost, carefully dig up the plant, taking care not to damage the root system. Trim back any excessive growth and remove any dead or damaged leaves. Place the plant in a pot with well-draining soil and find a suitable location indoors, such as near a sunny window. It’s important to maintain a consistent temperature and provide regular watering for the plant during this time.
Another option is to provide protection for your mandevilla outdoors during the winter months. This can be done by covering the plant with a frost blanket or using a plant cover specifically designed for winter protection. This will help to insulate the plant and shield it from freezing temperatures. Additionally, you can mulch around the base of the plant to provide further insulation and protect the roots.
In both cases, it’s important to monitor your mandevilla closely during the winter months. Watch for signs of stress or damage, such as wilting or yellowing leaves. Adjust your care routine as needed, ensuring that the plant is receiving adequate sunlight, water, and humidity.
Personal experience: I live in a region where winters can be quite cold, and I have successfully overwintered mandevillas by bringing them indoors. I find that providing them with a sunny location and regular watering helps to keep them healthy and vibrant throughout the winter. In the spring, I gradually reintroduce them to the outdoors, allowing them to acclimate to the change in temperature and light levels.
While red mandevillas are technically perennial plants, they are often treated as annuals in regions with freezing temperatures. However, by bringing them indoors or providing winter protection, you can keep your mandevilla alive and encourage its return year after year. It’s important to closely monitor the plant and provide appropriate care during the winter months to ensure its survival.
