Erysimum - book or advice?

[grenadier]

  Please does any member know of a specialist book or any publications devoted to the cultivation of erysimum's (Perennial wallflower). Thank you~gardenelf.

[Maggi Young]

You could start here : http://erysimums.onesuffolk.net/the-collection/collecting-erysimums/

Then there's this paper of the species in Bulgaria : http://www.landesmuseum.at/pdf_frei_remote/ANNA_107B_0227-0273.pdf

and there are quite a few net-pages such as this :  http://www.abc.net.au/gardening/stories/s1866697.htm

 But I'm not aware of a book on these plants - but I'd almost bet someone will know!

[grenadier]

Thank you so much for your reply Maggie. I am going to spend some time this evening researching your suggested material which looks really really interesting. Maybe a member may come across this post and come up with a book on the subject. Once again many thanks.~ gardenelf.