Noting the comment about the Viburnum Bodnantense - the name would indicate it is a Bodnant hybrid. Back in the 1920's and 1930's, and even now to a slightly lesser extent, the gardeners at Bodnant were always creating new varieties of plants - the Bodnant hybrid rhododendrons were often winners at the Royal Chelsea Flower Show - and their many different dark red varieties earned them the nickname "Bodnant bloody reds".
If you're in Bodnant Garden (note the correct name is singular and not Gardens plural - it is all one garden!) keep your eyes open for plants with green labels - these are the Bodnant hybrids, shouldn't take you long to find some!
On a different note, the trees with blue labels are champion trees, because they're the tallest or biggest girth of their variety in the UK ... there are 41 in total - there is a special leaflet about them, ask at reception then see how many you can find! Yes, I do know where most of them are, and it includes the tallest magnolia in the UK!