Erysimum asperum--Siberian Wallflower
Erysimum asperum--Siberian Wallflower
Siberian wallflower produces yellow or orange flowers in April and May. A sunny light exposure and an ordinary garden soil are adequate. The plant dislikes heavy soils but will tolerate soils with a pH above 7. Siberian wallflower grows one foot high and can be treated as a biennial.
Propagation is by seed planted in mid-summer. If planted too early they bloom in the fall, then give a poor showing the following year.