- May 1976
Establishment of Tsukuba Botanical Garden.
- December 1976
Complement of Research and Management Building in the Garden.
- October 1981
Complement of Useful Plants House.
- August 1983
Complement of Orientation Building.
- October 1983
Opening of Tsukuba Botanical Garden for the public.
- December 1985
Opening of Savannah House.
- January 1990
Opening of Workshop and Exhibition Bulling.
- January 1995
Opening of Tropical Rainforest House.
- October 1995
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Transfer of Department of Botany to Tsukuba District.
- April 2007
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Garden's research organization is merged with the Botany Department.
- October 2008
25th anniversary of the Garden, and opening of Human and Biodiversity Area.