The production of tea-tree oil from Melaleuca species in Australia began some 80 years ago, and the industry has grown steadily, if erratically, since then. This report is a practical guide to production of controlled-cross seed of M. Alternifolia. Some or all of the techniques is describes may be adaptable to related species cultivated for essential oils, and to other locations.
Links:
[1] http://www.aciar.gov.au/system/files/sites/aciar/files/node/733/ACIAR TR63 (web) part 1.pdf
[2] http://www.aciar.gov.au/system/files/sites/aciar/files/node/733/ACIAR TR63 (web) part 2.pdf