Cultivation Most wallflower garden cultivars (e.g. Erysimum 'Chelsea Jacket') are derived from E. cheiri (often placed in Cheiranthus), from southern Europe. They are often attacked by fungal and bacterial disease, so they are best grown as 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, hence the vernacular name. 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 schemes with tulips and forget-me-nots.
cultivaTIOn mosT WallfloweR garden cuLtiVaRs (e.g. erysimum 'cheLseA jaCKeT') aRe deRived from e. cHEirI (often Placed In cHeiranThus), fROM soUthern euRoPe. tHey are ofTEn attacKeD By FungAL and bacteRiAl dIseASe, So thEY Are Best gROWN as 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, hENCe the VeRNaCULAr NamE. 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 Schemes with tUlips and fOrget-ME-nOTS.