Lupinus arboreus (Blue Shrub Lupine)
Lupinus arboreus (Blue Shrub Lupine)
100 (200)cm, Blue Shrub Lupine is a tall perennial, slightly woody sub shrub native of Western USA growing in coastal areas. Makes showy pale blue flower racemes in this form. For any rich, well drained soil in a sunny, protected spot. In cold regions give some protective mulch layer in winter. VII-VIII.More Details »