By Leighleigh
West Yorkshire,
United Kingdom 
Anyone know what this perennial is? sorry about the picture. had it 2years but wasnt labelled when i got it :-)
17 May, 2012
Answers
Possibly perennial wallflower or Erysimum
17 May, 2012
Yes it looks like erysimum. They are perennials ( perennial wallflowers ) but some live longer than others and you may find than one year it just gives up the ghost and you will have done nothing wrong. You can try taking cuttings. There are a few yellow ones. This may be Yellow Bird.
17 May, 2012
Looks like a wallfower? Welcome to GOY.
17 May, 2012