Editing Erysimum (section)

== Cultivation ==
Most wallflower garden [[cultivar]]s (e.g. [[Erysimum 'Chelsea Jacket'|''Erysimum'' 'Chelsea Jacket']]) are derived from ''[[Erysimum cheiri|E. cheiri]]'' (often placed in ''Cheiranthus''), from southern Europe. They are often attacked by fungal and bacterial disease, so they are best grown as [[biennial plant|biennials]] and discarded after flowering. They are also susceptible to [[clubroot]], a disease of [[Brassicaceae]]. Growth is best in dry soils with very good drainage, and they are often grown successfully in loose wall mortar. There is a wide range of flower color in the warm spectrum, including white, yellow, orange, red, pink, maroon, purple and russet. The flowers, appearing in spring, usually have a strong, pleasant fragrance.  Wallflowers are often associated in spring [[bedding (horticulture)|bedding]] schemes with [[tulip]]s and [[forget-me-not]]s.<ref name=RHSAZ>{{cite book|title=RHS A-Z encyclopedia of garden plants|year=2008|publisher=Dorling Kindersley|location=United Kingdom|isbn=978-1405332965|pages=1136}}</ref>

The cultivar 'Bowles's Mauve'<ref>{{cite web|title=''Erysimum'' 'Bowles's Mauve'|url=http://apps.rhs.org.uk/plantselector/plant?plantid=740|publisher=Royal Horticultural Society|access-date=26 July 2013|archive-url=https://web.archive.org/web/20111106060727/http://apps.rhs.org.uk/plantselector/plant?plantid=740|archive-date=6 November 2011|url-status=dead}}</ref> has gained the [[Royal Horticultural Society]]'s [[Award of Garden Merit]].<ref>{{cite web | url = https://www.rhs.org.uk/plants/pdfs/agm-lists/agm-ornamentals.pdf | title = AGM Plants - Ornamental | date = July 2017 | page = 45 | publisher = Royal Horticultural Society | access-date = 2 May 2018}}</ref> It can become a bushy evergreen perennial in milder locations. It is strongly scented and attractive to bees.