Hi Linelys (and @brightcolours) usually under every plant you can find a generic genus (with no variety) which you can assign your plant to. This means you get the correct info and care instructions coming into you task list. For the Hibiscus it looks like there is one under the common name "rose mallow". Hope this helps!
"But it’s the tropical or Chinese hibiscus (H. rosa-sinensis), often called Hawaiian hibiscus, which is the most familiar and widely grown. It has been cultivated for so long that its origins, thought to be China or the Indian Ocean region, remain obscure. Today thousands of new, large-flowered cultivars of this bold, colourful flowering shrub have become synonymous with cultures in the Asia-Pacific region."