Declared Weeds and Alien Invader Plants in South Africa by Mayda Henderson et al. (Department of Agriculture and Water Supply, 1987) is an authoritative governmental reference work addressing one of the most critical environmental and agricultural challenges facing South Africa. Produced under the auspices of the national Department of Agriculture and Water Supply, this 1987 publication was designed to support farmers, land managers, conservation authorities, and policymakers in the identification, understanding, and control of invasive plant species formally declared as weeds or alien invaders under South African law.
Declared Weeds and Alien Invader Plants in South Africa provides a systematic and practical overview of plant species that pose a threat to indigenous ecosystems, agricultural productivity, and water resources. Each entry focuses on species that had, by the late twentieth century, demonstrated aggressive spread and ecological impact, warranting legal regulation. Emphasis is placed on accurate identification, legal status, and the reasons for declaration, making the work both a scientific reference and a regulatory guide. The text reflects the growing awareness during the 1980s of the long-term environmental costs associated with invasive alien plants.
Declared Weeds and Alien Invader Plants in South Africa is grounded in applied botany and environmental management rather than purely academic theory. It bridges the gap between scientific research and practical land-use policy, offering clear, accessible information intended for use in the field as well as in administrative and educational contexts. The involvement of multiple contributors under the editorship of Mayda Henderson ensures a broad base of expertise, drawing on botanical, agricultural, and conservation knowledge.
As a 1987 Department of Agriculture and Water Supply publication, this work now also serves as a historical snapshot of invasive plant management policy during a formative period in South African environmental regulation. Declared Weeds remains of lasting value to collectors of Africana, environmental historians, botanists, and anyone interested in the development of invasive species control in southern Africa. The book stands as a solid, factual, and policy-driven reference rooted firmly in its time while addressing issues that remain highly relevant today.
Condition: Near fine – Little to no notable wear.


















