Garden Design in the British Isles: History and Styles since 1650 
Internet history of British gardens and designers to the end of the 20th century.

History of Garden Design
While providing a brief introduction to a variety of garden history styles, this site is best suited for those interested in herb garden design.

The History of Gardening

This timeline of gardening history from ancient times to the twentieth century includes information about botanical explorations in Canada and America, as well as quotations, art, haiko and a host of fascinating garden references.

History of Gardens and Landscapes in the Indian Subcontinent
Article, references and web links on pre-Islamic gardens in India.

The Japanese Garden
Bowdoin College provides detailed photographic visits to famous Japanese gardens, primarily in Kyoto, plus an overview of the history of early garden design, and a section on the basic elements of Japanese gardens.

Persian Garden Design
History, climate and garden solutions.