The butterfly garden at Ridiyagama Safari Park will reopen to the public from June 3, the Department of National Zoological Gardens (NZG) announced.
The facility had been closed due to maintenance issues and has now been renovated for World Environment Day.
Director General Dr. Chandana Rajapaksa said new plant species have been added to attract butterflies.
Sri Lanka has 248 recorded butterfly species, including 31 endemic species. Around 60 species have been identified within the garden.
A new free-flight aviary at the park will also be promoted alongside the butterfly garden as part of an environmental zone.