These notes are maintained by Ben Discoe (who also has a tea farm)
|Tea Cultivation : Comprehensive Treatise by N. Ghosh Hajra
518 p., hardcover, colour photographs, ISBN 81-85860-57-2
Links for it on Bagchee ($76) Vedams ($94) and Amazon ($60)
I ordered this book and received it in August 2006. It covers growing (but not processing) tea. It's great on history, cultivation, weeds, pests, fertilizers. It attempts to cover the entire world of tea, with an emphasis on India. It doesn't have any specific information about the popular Japanese and Chinese cultivars. There is a brief chapter at the end on Organic Tea. While there are shortcomings and a very large number of typos, this appears to be the only affordable book in the English language on growing tea.
|Tea: Cultivation to Consumption, by K. C. Willson
768 p., hardcover, ISBN 0-412-33850-5
Link for it on Amazon UK (£285 ! around US$460 in 2009)
I haven't ordered this book, which looks good, but expensive. Rumor has it that both growing and processing are covered which would make it uniquely useful.
|The Story of Tea: A Cultural History and Drinking Guide
432 p., hardcover, ISBN 1580087450
at Amazon ($21)
Although most of the book covers the usual history and brewing information, it does contain a little useful information on how different kinds of tea are processed.
|Tea IPM Ecological Guide
(Vietnam, 2001), by Michael R. Zeiss, Koen den Braber
"A Trainers' Reference Guide on Crop Development, Major Agronomic Practices, and Disease and Insect Management in Small-holders' Tea Cultivation in northern Viet Nam"
online as 18 pdf files, 292 pages
Covers most of the same cultivation material as the Hajra book, but also has a chapter on processing and marketing. It says: processing tea is like cooking a meal: you cannot learn it by reading about it, you have to learn by doing it, with an expert there to teach you.