General botanical recources

• GISA Search Directory:
  South Africa's green search engine for green-related products, suppliers and consultants.
• Internet Directory for Botany:
  Index to batanical information available on the internet. 
• South African National Biodiversity Institute:
  The principal  botanical research organisation in South Africa; manages several botanical gardens (including Kirstenbosch) and herbaria.
• Protected Trees
• The Convention on Biological Diversity (CBD):
  The Convention on Biological Diversity's (or "Rio Convention") objectives are the conservation of biological diversity, the sustainable use of its components and the fair and equitable sharing of the benefits arising out of the utilization of genetic resources. 
• IUCN Red List of Threatened Species:
  Searchable database of the World Conservation Union (IUCN) Red List of Threatened Species, including trees. It provides taxonomic, conservation status and distribution information on taxa that have been globally evaluated using the IUCN Red List Categories and Criteria. 
• Biodiversity Hotspots:
  Conservation International's informative review of the most threatened areas of plant and animal life on earth. No less than four Hotspots are found in southern Africa. 
• Terrestrial Eco-regions of the World:
  World Wide Fund for Nature (WWF) initiative to demarcate and describe 867 eco-regions; the latter being geographically distinct areas of land that is characterized by a distinctive climate, ecological features, and plant and animal communities. 
• UNEP-WCMC Database of Rare Trees:
  A searchable database containing information of threatened trees and other trees of conservation concern. Data contributes to the Global Trees Campaign. 
• World Heritage Convention:
  The mission of this Convention is to define and conserve the world's heritage, by drawing up a list of sites whose outstanding values should be preserved for all humanity and to ensure their protection through a closer co-operation among nations.
  

Alien invader plants 

• ARC Plant Protection Research Institute Conservation:
• Weeds and their control in South Africa.  
  

Floras and checklists 

• Flora Zambesiaca:
  An electronically available Flora for Zimbabwe, Zambia, Malawi, Mozambique, Botswana and the Caprivi Strip of Namibia. 
• Flora of Zimbabwe:
  Checlist of plants found in Zimbabwe with notes on endemism and Red List status.Scientific plant names 
• International Plant Name Index:
  Searchable database of the names and associated basic bibliographical details of all seed plant names (both valid and invalid) published since about 1753. Primarily a resource for professional botanists.

• Tree Atlas of Namibia - http://treeatlas.biodiversity.org.na/

• Swaziland Tree Atlas - http://www.sanbi.org/sites/default/files/documents/documents/sabonet-report-no-35-swaziland-tree-atlas.pdf

• State of the World's Plants - http://science.kew.org/strategic-output/state-worlds-plants

Societies 

• Botanical Society of South Africa 
• Tree Society of Zimbabwe
• International Dendrological Society

• The Cycad Society of South Africa 

Timber plantations "Plantations are not forests" 

• Timberwatch Coalition:
  Coalition of organizations concerned about the negative biological and sociological impacts of commercial timber plantations in southern Africa. 
• World Rainforest Movement:
  International body promoting the conservation of natural forests but opposing the large scale destructive expansion of commercial timber plantations, especially in developing countries.