A project was carried out in 2003/2004 by Kate Braun, Sikhumbuzo Dlamini and Titus Dlamini, under the auspices of the Swaziland Environmental Authority, to compile existing data on alien invasive plants of Swaziland. One product of this project was the creation of an online database of Swaziland's alien/non-indigenous plants, with distribution maps and photographs or illustrations.

The Alien Plants database includes information and distribution maps on the alien plants. The information currently included is out of date, but a major update is in progress.

An intensive survey of alien plants in Swaziland was carried out by the Forestry Department in 2009, including both aerial and road surveys.

Highly invasive major problem species which were identified are: