You can propagate your tropical hibiscus from soft-stem cuttings taken in late spring. It is good to use rooting hormone, and be sure to keep the cuttings out of direct sunlight until they are growing.For consistent flower production in container plantings, make sure to avoid very deep containers, which can cause the plant to spend its energy on root development at the expense of flowers. In mixed containers, the ideal pot shape is quite wide but relatively shallow.
You will likely need to repot your plant every one to two years. Look for signs that it is dropping leaves, appearing stressed, or hasn't been growing well.