We're not naturalists, just normal nature-loving tourists. And found the gardens not bad but far below Hakgala and Peradeniya, which charge same or lower entrance fee. The main issue is that from the acres only 200 are really developed, and even for them the information signs aren't great. E.g. the booklet obtained with the ticket is 90% Sinhala-only, English is only at the map. Still if you're in the area, worth maybe 90 min of your time (or 60 if you book the additional golf cart tour).

Mirijjawila Botanical Garden is the second largest botanical garden of Sri Lanka and the one established after the freedom. It is a good collection of endemic and exotic flora and flowers. They have done a hard work to make such a beautiful landscapes in dry zone. Few points I would like to note by my experience: Better go after monsoon rain, otherwise the surrounding might be dry. Start the journey early morning or evening. We have walked all over the garden with capturing. It spent only 3 hours and I would like to recommend walking rather than hire an electrical vehicle to watch the garden. There is no cafeteria in side the garden except the one at entrance. But they have placed few drinking water spots at the garden.