Laburnum × watereri

{{Short description|A hybrid species in the family Fabaceae}}

{{Speciesbox

| image = Laburnum arbour by Temple Newsam House - geograph.org.uk - 305763.jpg

| image_caption = The John Beer Laburnum Walk

| genus = Laburnum

| species = × watereri

| authority = (A.C.Rosenthal & Bermann) DippelHandb. Laubholzk. 3:673. 1893

}}

Laburnum × watereri (or Laburnum watereri), is a naturally occurring hybrid species of Laburnum, native to Central Europe. Its parents are common laburnum, Laburnum anagyroides, and alpine laburnum, Laburnum alpinum. A small deciduous tree or large shrub, it is a popular garden plant, called golden chain tree for its spectacular display of hanging clusters of yellow pea-like blossoms.{{cite book |last=Dirr |first= Michael A. |date=2011 |title=Dirr's Encyclopedia of Trees and Shrubs |url= |location= |publisher=Timber Press |page=418|isbn=9780881929010 }} It can be trained to take forms such as arches and espaliers.

The best known cultivar is 'Vossii', which has gained the Royal Horticultural Society's Award of Garden Merit.{{cite web|title= Laburnum × watereri 'Vossii' Voss's laburnum |url=https://www.rhs.org.uk/Plants/44171/i-Laburnum-i-times;-i-watereri-i-Vossii/Details |accessdate=28 December 2019}} Growing eventually to {{convert|8|m|ft|abbr=on}} tall and broad, it bears pendent {{convert|60|cm|in|abbr=on}} racemes of bright yellow flowers in spring. It prefers a position in full sun.

All parts of the plant are poisonous, although mortality is very rare.{{cite journal| author = Forrester R.M. | title = Have you Eaten Laburnum? | year = 1979 | journal = The Lancet| volume = 313 | issue = 8125 | pages = 1073 | doi = 10.1016/S0140-6736(79)92963-5 | pmid = 86787 | s2cid = 38961471 }}