The Department Arts, Heritage, Regional, Rural and Gaeltacht Affair says an updated Strategic Rhododendron Management Plan is being finalised and hopes to publish this in the coming months.
€700,000 has been spent on efforts to eradicate rhododendron in Killarney National Park in the past five years, with €210,000 spent on the problem last year alone.
Just Forrests, a woodlands conservation agency is calling for the army to be drafted in to tackle the problem.
Rhododendron has become an invasive species in Ireland and has spread across much of the 10,000 hectare park.
In 2015 the Government appointed a specialist for a two-year period to assist the on-going Rhododendron eradication programme.
The management of Rhododendron is a long-standing on-going programme in the National Park, which includes clearance, maintenance work by volunteers and students, a rhododendron eradication management contract and work by the National Parks and Wildlife Service which includes research and monitoring.