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The X-factor Wingnut of the Plantsoen

Plantsoen

Years old136-146
Girth5.15 m
SpeciesCaucasian Wingnut

In 2009 Leiden held a public vote to decide which of its trees had the X-factor. This one won with 160 votes. The runner-up, a copper beech, got 83. The contest was run by the Bomenstichting together with the VSB-fonds, De Groene Stad and the Koninklijk Nederlandsche Heidemaatschappij, and alderman John Steegh turned up to honour the winner formally. The margin is the part worth noticing: nearly two to one against a copper beech, which is the kind of tree that normally wins these things. A Caucasian wingnut earns it. It is a relative of the walnut from the forests between the Black Sea and the Caspian, large and fast growing, with pinnate leaves long enough to look tropical and chains of winged nutlets that hang off the branches through late summer like green rope. Nothing else in the Plantsoen looks remotely like it. The register dates its planting to the 1880s, roughly 140 years ago, which puts it a few decades younger than the park. The Plantsoen was laid out between 1835 and 1842 on Leiden's old city bulwarks, an English landscape park designed by Salomon van der Paauw and built in part to give unemployed men work. No girth has been published for this tree. If you take a tape to it, we will add the number.

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Getting there

Plantsoen, near number 63, Leiden

You can recognise it by long, tropical-looking pinnate leaves and chains of winged nutlets hanging like green rope in late summer. Nothing else in the Plantsoen looks like it. It stands near number 63.

Free, public city park, open at any time

20 minute walk from Leiden Centraal station

The tree's year
now JanFebMarAprMayJunJulAugSepOctNovDec

In fruit

August and September, when chains of winged nutlets hang from every branch

The line is our estimate of how much there is to see, not a measurement. Typical for this species where this tree stands; exact weeks shift with the year.

Sources

Where the facts on this page come from. The story was written with AI from these sources, and readers who know the tree correct it.

  • In the official register: Landelijk Register Monumentale Bomen (Bomenstichting), no. 1690117
  • Landelijk Register Monumentale Bomen v2024 (LRMB), Bomenstichting (LRMB v2024, Bomenstichting, nr 1690117, used with written permission)
  • degroenestad.nl
  • services-eu1.arcgis.com

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The X-factor Wingnut of the Plantsoen

For example: “Best seen from the north side around four, when the sun comes through.” Or: “There was a church on this square until 1755.”

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