Lobelia siphilitica Seeds
Blue Cardinal Flower Seeds
Ease to Grow: Easy.
Native Range: Wetlands of North and South America.
Zones: 3-8 (2-10).
Great Blue Lobelia or Blue Cardinal Flower, Lobelia siphilitica, is a striking, tall, wetland plant with vibrant blue flower heads. Each flower has two upper petals and three spreading lower petals, all joined in a long nectar tube. The 100+ flowers tightly cluster into a long, tall blooming spire of vibrant blue. The leaves are dark green and finely toothed. It prefers growing in consistently wet, loose soils, appreciating shade and tolerating full sun in cool, northern zones. It flowers from Summer through Fall and attracts hummingbirds and butterflies. It is a rapid grower and spreads nicely from offshoots along the stem in Fall. The alkaloids from the plant are considered poisonous to animals. Blue Cardinal Flower is technically not a perennial because the flowering stem and its roots die after setting seed, but offshoots develop along the stem and can propagate the colony year after year. It generously produces seeds, and spreads through out the collection. It is outstanding among pitcher plants and a plant of merit in the bog garden
Seed Packs are fresh harvested in the Fall, and stored refrigerated. Seed count is approximate, but reliable.
Note: Stratification is required to prepare seeds for germination. All seeds are produced from open pollination within our collection. Some cross pollination among different cultivars may occur. Growing carnivorous plants from seeds is best suited for the experienced and patient grower. See our webpage on Growing CPs from Seeds.
Height: 8" - 24+".
Plant Type: Perennial, cold temperate.
Soil: General Bog Mix.
Soil pH: 6.0-7.5.
Light: Full Sun to Partial Shade.
Use: Late summer brilliant red summer flowers. Attracts hummingbirds and butterflies.