Omphalodes ‘Starry Eyes’. Photograph: Paddy Tobin

What is your favourite Irish plant? And no, you’re not allowed to say shamrock … Instead, I’m thinking of the thousands of wonderful garden plants (...)

 Seamus O’Brien, head gardener of Kilmacurragh surrounded by the flowers of the tree rhododendron, R.arboreum ssp. cinnamomeum, which is in full bloom in the gardens at the moment. Photograph: Richard Johnson

An awfully long time – roughly 140 years – has passed since the famous Broad Walk of Kilmacurragh in Co Wicklow was first laid out by siblings (...)