Copper Beech

Fagus sylvatica f. purpurea

Every copper beech in Europe descends from an accident. We map 74 of them, in 49 cities.

The purple leaf is a mutation that turns up at random in wild green beech forests, and it is a handicap rather than an advantage: the pigment masks the chlorophyll underneath and cuts the light the leaf can put to work, so purple seedlings are outgrown by green ones and vanish. The tree exists in numbers only because gardeners in German and Swiss forests kept the freak and propagated it, usually by grafting, since it does not come true from seed. Leiden's was grafted low onto a green rootstock, and two centuries of mismatched growth rates have left it with a broad gnarled base that looks nothing like a beech. Boston's is the only living Historic Landmark in Cambridge, designated in 1985 to stop a building. In 2024 a grafted Silesian beech was voted Europe's tree of the year.

Brussels

Porto

Munich

Alkmaar

Seattle

Amsterdam

Berlin

Leipzig

Leeuwarden

Rotterdam

The Hague

Montreal

Vienna

Boston

Eindhoven

Warsaw

Utrecht

Dresden

Nijmegen

Dordrecht

Amersfoort

Antwerp

Leiden

Haarlem

Arnhem

Zwolle

Deventer

Helmond

Baarn

Emmen

Assen

Ceska Lipa

Frankfurt

Frydlant

Ghent

Graz

Hallstatt

Hamburg

Hoorn

Jihlava

Luxembourg City

Madeira

Portland

Priekulė

Roosendaal

Sittard-Geleen

Strasbourg

Wojslawice

Zaanstad

Explore by city: Brussels · Porto · Munich · Alkmaar · Seattle · Amsterdam · Berlin · Leipzig · Leeuwarden · The Hague · Montreal · Vienna · Boston · Eindhoven · Warsaw · Utrecht · Dresden · Nijmegen · Dordrecht · Amersfoort · Antwerp · Leiden · Haarlem · Arnhem · Zwolle · Deventer · Helmond · Baarn · Emmen · Assen · Frankfurt · Ghent · Graz · Hallstatt · Hamburg · Hoorn · Luxembourg City · Madeira · Portland · Priekulė · Strasbourg · every city · or browse all species.

Over 3,600 old trees worth the walk

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