Editing Laburnum (section)

===Cultivation===
''Laburnum'' [[species]] and [[Hybrid (biology)#Hybrid plants|hybrid]]s are cultivated as [[Ornamental plant#Trees|ornamental trees]] for gardens and parks. They are also trained as [[espalier]]s on [[pergola]]s, for ceilings of pendant flowers in season. In its natural form, ''Laburnum'' is a shrubby, multi-branched tree, but it is often pruned to maintain a single trunk which displays the smooth green bark.

Gardeners are advised to remove the spent seedpods after flowering because they sap the strength of the tree and are the most poisonous part.<ref>{{cite book| title=Sunset Western Garden Book | editor=Kathleen Norris Brenzel | year=2007 | page=429 }}</ref> Generally ''Laburnum'' does not perform well in hot climates, and has a reduced life-span if grown in climates with warm winters. Afternoon shade and the occasional deep watering are advisable in areas with hot, dry summers. They do best in climates with moderate winter and summer temperatures, ideally [[Oceanic climate|Oceanic climates]] like those of the [[Pacific Northwest]] and [[Northern Europe]].<ref>{{cite web | url = http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c115| title=Laburnum x watereri 'Vossii'|publisher=Missouribotanicalgarden.com| access-date=18 December 2017}}</ref> ''Laburnum'' trees are ubiquitous in [[England]], [[Wales]], [[Scotland]] and [[Ireland]], where they are commonly planted as lawn specimens or in shrub borders.

Most garden specimens are of the hybrid between the two species, ''Laburnum'' ×''watereri'' 'Vossii' (Voss's laburnum), which combines the longer racemes of ''L. alpinum'' with the denser flowers of ''L. anagyroides''; it also has the benefit of low seed production. It has gained the [[Royal Horticultural Society]]'s [[Award of Garden Merit]].<ref>{{cite web | title = Plant Selector—''Laburnum'' ×''watereri'' 'Vossii' | url = http://apps.rhs.org.uk/plantselector/plant?plantid=1105 | publisher = Royal Horticultural Society | accessdate = 20 May 2013 | archive-date = 13 April 2014 | archive-url = https://web.archive.org/web/20140413150139/http://apps.rhs.org.uk/plantselector/plant?plantid=1105 | url-status = dead }}</ref><ref>{{cite web  | url= https://www.rhs.org.uk/plants/pdfs/agm-lists/agm-ornamentals.pdf | title = AGM Plants - Ornamental | date = July 2017 | page = 57 | publisher = Royal Horticultural Society | accessdate = 17 March 2018}}</ref>