Erysimum asperum--Siberian Wallflower

By The Old House Web

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.

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