These pretty perennial wallflowers do not need replacing every year like their biennial counterparts, and nearly all are evergreen.
They thrive in sun and on well-drained soil enriched with organic matter.
Trim them after flowering to remove faded flowers and straggly shoots and keep them neat. Good varieties include E. Bowles' Mauve', which grows to around 75cm (30in).
Its spikes start flowering in March and peak in April, but then it flowers intermittently until late autumn.
Place it with silver-leaved Mediterranean-style plants and dwarf bulbs and you won't go far wrong.
Other good varieties include the compact, low-growing E. Wenlock Beauty', whose copper flowers fade to mauve, while Plantworld Gold' produces gold flowers which age to purple. Erysimum don't last forever, though.
They will need to be replaced around every three years.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereComments are closed on this article