The Texas hibiscus or Texas Star hibiscus, a type of rose mallow, possesses the largest flowers of any perennial. They are deep red with the classic, five-petaled hibiscus shape, often opening to a diameter of 12 inches. The foliage is also striking, with large, glossy, green leaves on tall, slender stems. Few garden plants provide so much beauty while requiring so little care. Growing well in the southern United States from hardiness zone 5 through 10, they can be easily propagated by seeds.
Select Texas hibiscus seeds, whether from the seed pods of a parent plant or a commercial source, ensuring they are free of damage and disease.
Place fine potting soil into individual containers. Use already-prepared containers from your local garden center or disposable drinking cups with holes punched in the bottom for drainage.
Nick the end of each seed with the knife to remove some of its seed coat. This will improve the seed's ability to take in water. It is also a good way to identify viable seeds. Look for the white germ within each seed.
Plant the seeds by making a hole in the soil about 1 inch deep. Place one seed in each pot and cover it with potting soil, pressing down lightly.
Water the seeds and cover them loosely with plastic wrap. Keep the wrap in place with rubber bands or tape. This will help them stay moist.
Place the containers in the sun to encourage the seeds to germinate. Watch for growth within the next few weeks. Mist with water regularly.
Transplant seedlings, once the plants have grown several inches, to larger pot or in fertile, prepared soil in your garden.
Fertilize your Texas hibiscus plants and water regularly to encourage them to grow and bloom.