Erysimum (Bowles Mauve) Wallflower
My six year old insisted that we buy this as we strolled through the garden center of a local big box store. These purchases get to be "his" flowers and he takes some pride in the fact that "his" flowers (like vincas and impatiens) are often blooming while "mine" are not.
For myself, I never buy things that Home Depot and Lowes stock that I have never seen in a local garden. Every spring I see palettes of scotch brooms in bloom in the stores and I never see them around town. They must rot immediately upon contact with our soggy soil.
Does anyone have any practical experience with this wallflower? Is it a perennial or biennial? Will it spread, self-sow or just rot in the ground?