Bush hibiscus is a beautiful flowering plant that is commonly found in many gardens. However, if you are looking for an alternative name for it, there are several synonyms that you could use. Some of the synonyms for bush hibiscus include rose of Sharon, Althea, confederate rose, and hibiscus syriacus. These names are often used interchangeably, depending on the species and variety of the plant. The bush hibiscus is a versatile plant that can be grown in different soil types. It is also known for its stunningly beautiful flowers that bloom in many colors including pink, blue, purple, and white.