ANPSA consists of seven affiliated regional societies, one for each of the six Australian states and the seventh being based in the Australian Capital Territory. Although there is regular contact between the Regions, each is independent and responsible for managing the affairs of the Society within its geographical area. Each Regional Group publishes a quarterly newsletter for its members who generally reside within the area of operations of the Region to which they belong, but this is not mandatory. Regular Regional meetings allow members to hear expert speakers on a range of topics related to the Australian flora.
Within each Region, District Groups have been established to enable members who live in the same locality to meet regularly and to participate in activities such as bushwalks, plant propagation workshops, plant identification sessions, garden visits and local meetings with qualified guest speakers. There are almost 100 District Groups throughout Australia. Further information on these District Groups is provided below.
The District Groups operate under the rules and regulations of the Region in which they are located but have their own elected executive and generally issue a regular newsletter covering local activities. District Groups may charge a small fee to cover their administration expenses.
All Regions and some District Groups have established web sites which provide information on local contacts, local nurseries, local plant reserves and on Australian plants suited to the local area.
Further information on membership of the Regional Groups can be found here.
Because the Regional Societies are independent, they operate under several different names as follows:
| Name | Applies in...... |
| Society for Growing Australian Plants | Queensland |
| Australian Plants Society | New South Wales, South Australia, Tasmania, Victoria |
| Australian Native Plants Society | Canberra |
| Wildflower Society of Western Australia | Western Australia |
For simplicity, the term "The Society" is used on this site to refer to ANPSA and to each of the Regional Groups.
All Regional groups offer a number of common benefits including access to a free "Seed Bank", Regional Meetings featuring expert speakers and a variety of field trips and excursions. Other services and benefits offered may vary slightly between the Regions as do the publications provided to members, as outlined below.
Publications included in Membership
Please refer to the Regional web sites (above) for further information about membership benefits.
If you are contemplating joining from outside Australia, it would be preferable to select a Regional Group which operates in a similar climate zone to your own place of residence. The following is a rough guide, however, it should be realised that some Regions cover several zones:
| Climatic Zone | Features | ANPSA Regions |
| Alpine | Low winter temperatures with frosts and snow; cool summers | Tasmania |
| Cool Temperate | Low winter temperatures with frosts during the cooler months; warm summers | Tasmania |
| Temperate | Low winter temperatures with frosts during the cooler months; warm to hot summers | Canberra |
| Warm Temperate | Mild winters with light frosts away from the coast; hot summers | New South Wales, Victoria |
| Mediterranean | Cool to cold, wet winters; hot summers with low rainfall | South Australia, Victoria, Western Australia |
| Sub-tropical | Mild, dry winter and reliable summer rainfall; high summer humidity | New South Wales, Queensland |
| Tropical | High temperatures and humidity all year round; heavy summer rainfall | Queensland, Western Australia |
| Inland | Very hot, dry summers with cold nights; cold winters | All except Canberra and Tasmania |
Further information on Australian climate zones is available from the Australian Bureau of Meteorology.
District Groups are located throughout Australia and allow Society members in a particular regional centre to take part in activities with other local members.
Canberra
Because of the relatively small size of the Australian Capital Territory, there are no District Groups in the Canberra Region.
New South Wales
22 District Groups have been established in the following areas: Armidale and District, Blue Mountains, Central Coast, Central West (Bathurst, Orange, Dubbo), City-St George (inner Sydney and southern suburbs), Coffs Harbour, East Hills, Hawkesbury (Windsor/Richmond), Hunter Valley, Illawarra, Macarthur (Campbelltown/Camden), Menai, Newcastle, North Shore (Sydney), Northern Beaches (Manly to Palm Beach), Nowra, Parramatta and the Hills, South East Region (south coast), Southern Highlands (Mittagong, Moss Vale), Southern Tablelands (Goulburn district), Sutherland, Tamworth.
Queensland
There are 18 District Groups and affiliated organisations in Queensland operating in the following areas: Brisbane (South Side), Brisbane (Western Suburbs), Brisbane (Daytime), Caboolture, Cairns, Gladstone, Innisfail, Ipswich, Kingaroy and Districts, Logan River, Mackay, Pine Rivers, Rockhampton, Samford, Sunshine Coast and Hinterland, Tablelands (Atherton), Townsville, Warwick.
South Australia
Within South Australia there are 13 District Groups: Brinkworth, Eastern Eyre Peninsula, Fleurieu, Karoonda, Kimba and Districts, Murray Bridge, Northern Yorke Peninsula, Para Districts, Parrakie Area, Port Augusta and Districts, Port Pirie, Southern Eyre Peninsula, Southern Flinders Ranges.
Tasmania
There are 4 District Groups in Tasmania: Kingborough, Hobart, Northern, North West.
Victoria
The Victorian Region has 30 District Groups: Albury/Wodonga, Ballarat, Bendigo, Colac-Otway, East Gippsland (Bairnsdale), Foothills (Melbourne), Geelong, Grampians, Hamilton, Keilor Plains, Latrobe Valley, Loddon-Murray, Maroondah, Melton & Bacchus Marsh, Mildura, Mitchell (Kilmore), Mornington Peninsula, Murrindindi, Shepparton, South East Melbourne, South Gippsland, Strathbogie Ranges, Wangaratta, Warrnambool, Waverley, West Gippsland, Wilson Park (Berwick), Wimmera, Wyndham, Yarra Yarra.
Western Australia
The Wildflower Society has 11 District Groups: Avon, Albany, Armadale, Darling Range, Eastern Hills, Kulin, Lesueur, Merredin, Murdoch, Northern Suburbs, Perth. There are also several affiliated groups.