16th National Arboretum Forest Open Day
12–4pm. River Rd, Molonglo Valley. (02) 6207 8484. Free. For one day only, the River Road gates are open to allow vistors to drive around and wander through some of the arboretum’s rarest forests. Join the free tours, showcasing stories behind the forest patterns and ANU Research Forests. Bring a picnic! Postponed if raining.
16th Sept–15th Oct Floriade’s 30th Year
10am–7pm. Commonwealth Park, Canberra. 1300 852 780. Free. Australia’s premier spring event celebrates its 30th anniversary. More than 1 million blooms create a striking backdrop to a month-long festival filled with horticultural workshops, cultural celebrations, artistic displays and fun entertainment and activities. NightFest (22nd–24th, 29th–1st, $30) lights up the beds. floriadeaustralia.com
23rd–24th Canberra Orchid Show
Sat 10am–5pm, Sun 10am–4pm. Ainslie Football Club, 52 Wakefield Ave, Ainslie. (02) 6251 7660. $2. View a wide range and diversity of orchids on display and for sale.