Solidago gigantea L.

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English Tall goldenrod Status LU: established. 1st record: 1887.
Lëtzebuergesch Riseg Goldrutt Status EU: established.
Français Verge d’or géante RA: ISEIA: A2, Black List. Harmonia+: 0,26.
Deutsch Riesen-Goldrute Wikipedia: Wikipedia - English - Tall goldenrod Wikipedia - Français - Verge d'or géante Wikipedia - Deutsch - Riesen-Goldrute Wikipedia - Nederlands - Late guldenroede | Wikispecies: Wikispecies - Solidago gigantea | CABI
Nederlands Late guldenroede Back to the list of neophytes

Report the species

Report Solidago gigantea to the National Museum of Natural History.

Brief description

Solidago gigantea (subsp. serotina) sl20Solidago gigantea L. can grow in a wide range of soil conditions but is not shade-tolerant. The plant is found in many disturbed and nitrogen-rich sites such as ruderal areas, fallow lands, abandoned fields, river banks, etc. and also colonises humid grasslands. It can build up dense and long-lasting populations and easily outcompete native plants, including tree seedlings. Competitive ability is favoured by allelopathic interactions. Once established, the plant may remain dominant for a long period of time and often prevents natural colonisation by woody species (Branquart et al. 2010).

Status and distribution in Luxembourg

Records of Solidago gigantea L. in Luxembourg. Data source: Recorder-Lux, iNaturalist & GBIF, 2021-01-19.

The oldest herbarium specimen at the MNHNL was collected under its synonym Solidago serotina Aiton on 8 September 1887 by Jean Feltgen (1833-1904) in a garden (“jardin Bosseler”) in Mersch (Specimen № 15601, MNHNL 2000-). The next record is a herbarium specimen collected by Jos Witry on 15 July 1937 in gardens in Rumelange (Specimen № 50850, MNHNL 2000-).

The first documented record in the wild was reported on 22 September 1960 by Léopold Reichling (1921-2009) in several locations of the Grund district in Luxembourg City (Bock, Stierchen, Breedewee) (MNHNL 2000-).

Currently, 78 records of tall goldenrod are accessible through the MNHNL-mdata portal (MNHNL, iNaturalist & GBIF 2019).

This melliferous species native to North America is naturalised in Europe: fairly common to fairly rare, present in waterfronts, forest edges, wastelands, wastelands; often in large stands (Lambinon & Verloove 2012: 703).

This species includes populations in North America with variable chromosome numbers. Naturalised plants in Europe have generally been reported to Solidago gigantea subsp. serotina (O. Kuntze) McNeill, still known to be tetraploid. The question remains, however, whether Solidago gigantea subsp. gigantea, diploid, also exists in Europe, and especially whether the two taxa are morphologically identifiable. The problem remains to be studied in the wild (Lambinon & Verloove 2012: 703).

Risk assessment

ISEIA protocol

A2 (3+2+3+3) = Black List (Ries et al. 2013: 19).

Harmonia+ protocol

Overall risk score 0,20 = (Overall Invasion score 0,63 x Overall Impact score 0,42) (Ries et al. 2020).


Worldwide distribution


  • Branquart, E., S. Vanderhoeven, W. Van Landuyt, F. Van Rossum & F. Verloove, 2010. Harmonia database: Solidago gigantea L. Harmonia version 1.2, Belgian Forum on Invasive Species. URL: [accessed on 2019-10-15]
  • CABI, 2019. Solidago gigantea. In: Invasive Species Compendium. Wallingford, UK: CAB International. URL: [accessed 2020-03-04]
  • Lambinon J. & F. Verloove, 2012. Nouvelle flore de la Belgique, du grand-duché de Luxembourg, du Nord de la France et des régions voisines. Sixième édition. Avec la collaboration de L. Delvosalle, B. Toussaint, D. Geerinck, I. Hoste, F. Van Rossum, B. Cornier, R. Schumacker, A. Vanderpoorten et H. Vannerom. Jardin botanique national de Belgique, Meise. CXXXIX + 1195 pp. ISBN : 9789072619884.
  • MNHNL, 2000-. Solidago gigantea L. in Recorder-Lux, database on the natural heritage of the Grand Duchy of Luxembourg. Musée national d’histoire naturelle, Luxembourg. URL: [Accessed 2019-10-15]
  • MNHNL, iNaturalist & GBIF, 2019. Solidago gigantea L. in MNHNL-mdata, online portal combining species observation from Recorder-Lux, iNaturalist and GBIF. National Museum of Natural History, Luxembourg. URL: [Accessed 2019-10-15]
  • Ries, C., Y. Krippel & M. Pfeiffenschneider, 2020. Risk assessment after the Harmonia+ protocol of invasive alien vascular plant species in Luxembourg. Bull. Soc. Nat. luxemb. 122: 197-205. [PDF 132 KB]
  • Ries, C., Y. Krippel, M. Pfeiffenschneider & S. Schneider, 2013. Environmental impact assessment and black, watch and alert list classification after the ISEIA Protocol of non-native vascular plant species in Luxembourg. Bull. Soc. Nat. luxemb. 114: 15-21. [PDF 652 KB]

 Page content last updated on 2020-04-29. Last proofread by Caroline Grounds on 2019-11-21.