Perennial hibiscus are also known as rose mallow, and they are native to the United States. In fact, they grow all over the Southeast naturally. With blooms from bright red to pink to white, and flowers as large as 10 to 12 inches in diameter, perennial hibiscus makes quite a sight in any garden. Since perennial hibiscus is hardy down to zone 4, it can grow in colder climates as well. Planting perennial hibiscus seeds is a simple way of getting these plants cheaply.
Wrap the perennial hibiscus seeds in a damp cloth and seal them inside a plastic bag. Place the bag in the refrigerator for two to three weeks. The cold will help the seeds germinate.
Fill the seed trays with potting soil. Dig a shallow hole about 1/4 to 1/2 inch deep in each tray.
Place one seed in each hole and cover them with soil. Keep the soil moist at all times. Plant perennial hibiscus seeds indoors four to six weeks before the last frost.
Transplant the perennial hibiscus to larger pots once the seedlings have two to three leaves.