In the directive 2004/107/EC (Fourth Daughter Directive), the EU has set a target value for nickel (Ni) for the protection of human health: the Ni annual mean value may not exceed 20 nanograms per cubic metre (ng/m3). The target value enters into force 31.12.2012.
EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, provided that the source is acknowledged (http://www.eea.europa.eu/legal/copyright). Copyright holder: European Environment Agency (EEA).
Be careful when buying for your garden. People are one of the main introducers of invasive species, especially flora. Many of the invasive species have been introduced for ornamental purposes. Do put an extra effort in finding out whether the plant you want is native to your environment.
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