Yes, there are lots of varieties to choose from but don't plant the one with mauve flowers that grows wild - Rhododendrum ponticum - as it's invasive. If you want to plant it in the ground you need acid soil - do a soil pH test or have a look & see if your neighbours / public gardens nearby grow Rhodos, azaleas, magnolias, camelias and heathers which are all acid loving plants. If you don't have acid soil you can grow the smaller varieties in pots filled with ericaceous compost.