Russell Blue Lupine

Russell Blue lupine (Lupinus polyphyllus ‘Russell Blue’) is a tall, upright garden lupine with blue flower spikes above green palmate foliage. A garden-centre profile lists a mature height of 3–4 feet and spread of about 18 inches, with dense flower spikes 12–15 inches long. It lists Russell Carmine Red separately, preserving the distinct color selections. [Creekside Home and Garden](https://www.creeksidehomeandgarden.ca/perennial-plant-list/) ## Seasonal Display This named blue selection belongs to the Russell hybrid garden lupines, not the separate Gallery series. Lupines generally bloom in spring and summer; their erect flower stalks make a strong vertical accent and may be used as cut flowers. [North Carolina Extension Gardener Plant Toolbox](https://plants.ces.ncsu.edu/plants/lupinus/) ## Growing Conditions North Carolina Extension recommends cool conditions, full sun, organically rich soil with good drainage, and consistent moisture for lupines. Hot, humid climates can make them short-lived; afternoon shade and mulch around the roots can help in hot summer areas. Regional performance varies, so use local guidance when selecting the site. ## Maintenance Deadhead faded flower spikes to encourage additional bloom, and watch for aphids, slugs, snails, and powdery mildew. Avoid waterlogged soil and keep mulch clear of the crown.