Botanic Gardens at Hakgala
http://www.botanicgardens.gov.lk/?page_id=4380
Henarathgoda Botanical Garden
https://en.wikipedia.org/wiki/Henarathgoda_Botanical_Garden#External_links
Mirijjawila Botanical Garden
https://en.wikipedia.org/wiki/Mirijjawila_Botanical_Garden
Royal Botanic Gardens at Peradeniya
https://lakpura.com/royal-botanical-gardens
Seethawaka Botanical Garden