Colin Mills, compiler of the Hortus Camdenensis, died in late November 2012 after a short illness. As he always considered the Hortus his legacy, it is his family's intention to keep the site running in perpetuity. It will not, however, be updated in the near future.

Gleditsia japonica Miq.

Fully-hardy, formidably armed tree with flattened thorns to 8cm long, pinnate leaves, and fruits to 30cm long, often twisted at maturity.  To 20m.  [RHSD, Hortus, Hilliers’].

Horticultural & Botanical History

Introduced to Britain in 1774.  [JD].  Don.

History at Camden Park

Listed in all published catalogues [T.519/1843].


Other possibilities are Gleditsia sinensis Lam., which see, and Gleditsia triacanthos L., which also see.

A number of species of Gleditsia have been used for hedging and fencing and this is the most likely reason for the introduction of all species.  See also Gleditsia triacanthos L.

Published Dec 21, 2009 - 04:39 PM | Last updated Jul 21, 2010 - 12:10 PM

Family Fabaceae
Region of origin

China, Japan

Common Name

Horrid thorn

Name in the Camden Park Record

Gleditschia horrida - Horrid Thorn 

Confidence level medium