Sydney’s Royal Botanic Garden first launched its Botanica exhibition in 1999, focusing on the often overlooked but historically vital art of painting and drawing plants. Since then, Botanica has become a key event on the gardens’ annual calendar, with the sale of all artworks going towards funding science and conservation programs. This year, the free exhibition will feature 120 artworks from 66 established and emerging botanical artists from Australia and overseas.

• Botanica is showing at the Royal Botanic Garden’s Lion Gate Lodge garden, Sydney, from 30 March