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Plant Focus

Quercus macdougallii
A rare oak endemic to the Sierra Juárez in Oaxaca

Taking Oaks to the Limit in the Czech Republic

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Béatrice Chassé

Published May 2015 in International Oaks No. 26: 77–88.


The Plaček Quercetum in Kanín, comprises to date about 200 taxa of the genus Quercus. Extreme winter cold, severe and frequent late frosts, 600 mm/24 in of rain annually, and very hot summers set the stage for this ambitious collection started by Dušan Plaček in 2008. The Průhonice Dendrologická Zahrada, Prague’s young botanical garden, headed by Mr. Zdeněk Kiesenbauer, started their oak collection in 2010. The search for hardy plants is a priority for both, and indeed one could say it is the leitmotiv of horticultural history in the Czech Republic.


Plaček Quercetum, oak hardiness, Průhonice Dendrologická Zahrada


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Krüssmann, G. 1978. Manual of Cultivated Broad-Leaved Trees & Shrubs. Berlin: Verlag Paul Parey.

Roux, S. de. 2014. Enquête sur les effets du froid de l’hiver 2011-2012. Bulletin de l’Association des Parcs Botaniques de France 58: 54-59.

Smithers, P. 1994. Adventures of a Gardener. London: The Harvill Press.