In article ,
Anne Chambers wrote:

http://www.crfg.org/pubs/ff/avocado.html

Harvest: The time of harvest depends upon the variety. Commercial
standards requires fruit to reach 8% oil content before harvesting.
Mexican types ripen in 6 - 8*months from bloom while Guatemalan types
usually take 12 - 18*months. Fruits may continue enlarging on the tree
even after maturity. Purple cultivars should be permitted to color fully
before harvest. Guatemalan types can be stored firm, at 40 - 50°*F. for
up to six weeks. Mexican types discolor quickly and require immediate
consumption.

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