Well-known gardener, writer and broadcaster Dermot O'Neill has died aged 58.

His family said that Mr O'Neill, who lived in Blackrock in Dublin, passed away suddenly last night at St Vincent's University Hospital.

He is survived by his two sisters and many friends, family members and colleagues.

Mr O’Neill, who was diagnosed with stomach cancer in 2009, was one of Ireland's best-known gardening personalities.

He was a regular guest on The Pat Kenny Show on Newstalk where he discussed all aspects of gardening.

Mr O'Neill was known for his contributions to numerous other television and radio programmes, including the Today programme on RTÉ Radio, The Garden Show and Open House.

He was also a long-time contributor to the RTÉ Guide and was also the author of two gardening books and served as the editor of Irish Garden News magazine.

He was a member of the council of the Royal Horticultural Society of Ireland and a founding committee member of the Irish Garden Plant Society.