Links in this category of editors choices cover some of these topics:
flora and vegetation, native plants, exotic, floristic, structural

• Environment Australia - Biodiversity Group [aus]
  • Biodiversity planning, plants and animals, environments, conservation programs, protected areas, National Reserves System, formerly Australian Nature Conservation Agency (ANCA)
• National Landcare Program (NLP) [aus]
• Manaaki Whenua - Landcare Research [nz]
• Commonwealth Scientific and Industrial Research Organisation (CSIRO) [aus]
• CSIRO Plant Industry [aus]
• Ecological Society of Australia (ESA) [aus]
• Department of Conservation [nz]
• New South Wales National Parks and Wildlife Service (NPWS) [nsw]
  • parks and reserve management, state recreation areas, nature reserves, Aboriginal sites register, cultural heritage
• Tasmania Parks and Wildlife Service [tas]
  • natural and cultural resources management, history and heritage, World Heritage Areas, National Parks and Reserves
• Earth Sanctuaries Limited (ESL) [aus]
  • rare and endangered conservation, reintroduction, habitat sanctuary, ecotourism, ethical investment, remove introduced predators
• Land Channel [vic]
  • the window to all distributed government land-related information and services in Victoria
• CRC for Weed Management Systems [aus]
• Weed Science Society of Victoria [aus, vic]
• Tamar Valley Weed Strategy Working Group [aus, tas]
  • community based organisation, photos and descriptions of common weeds and noxious weeds, biological control agents, dispersal and control methods
• Greening Australia [aus]
  • bushcare, vegetation management, vegetation helps repair degraded land and water, coordination, community-based organisations
• Royal Forest and Bird Protection Society of New Zealand Inc [nz]
• Department of Lands, Planning and Environment (DLPE) [nt]
• Natural Heritage Trust (NHT) [aus]
  • environmental rescue effort, coordinated approach, partnership of individuals and communities and governments, funding for environmental activities
• Native Nursery [aus, vic]
  • comprehensive directory of subjects related to native Australian flora and the environment, species list, Native CD-ROM, book shop, online ordering, message board
• Society for Growing Australian Plants (SGAP) [aus]
• Australian Tree Seed Centre (ATSC) [aus]
  • national tree seed bank, search seed database, seed suppliers
• FloraBank [aus]
  • supports collection, management, and distribution of Australian native seed, fact sheets, seed germination sheet, seedbank, contact details directory
• Weeds Australia [aus]
  • national weeds stategy, weed policies, regulations, research, training, weed management, noxious weeds list, control of roadside weeds, search weeds database, community groups
• Nature Conservation Council of NSW (NCC) [nsw]
  • peak umbrella organisation for community, conservation and environment groups, excellent search facility, links wide range environmental groups
• Canberra Organic Growers Society Australia (COGS) [act, aus]
  • links to many relevant organic WWW sites
• Nursery Industry Association of Australia (NIIA) [aus]
• The Seed Savers' Network [aus]
  • preserve genetic base, adapted to local growing conditions, local seed networks, searchable catalogue of botanical books
• Pearcedale Conservation Park [aus]
  • conservation education, breeding, moonlit sanctuary, partners for conservation, programs
• Australian Wildlife Conservancy (AWC) [aus]
  • independent, non-profit organisation, create reserves to protect habitat and threatened species, establish new populations

Region codes [aus, nz, ant, ...] indicate the state or country that each site is relevant to.