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Blue Cardinal Flower Seeds

SKU: AM013402
per Packet
No longer available this season.
This beauty is often called "Blue Cardinal Flower" since it is often planted with its famous red cousin. Easy. Perennial
key features
Botanical Name
Lobelia siphilitica
Seed Life Cycle
Growing Zones
Zone 3, Zone 4, Zone 5, Zone 6, Zone 7, Zone 8
Ideal Region
Northeast, Southeast, Midwest, West, Southwest, Pacific Northwest
Light Requirements
Half Sun / Half Shade
Seed Coverage
covers 40-50 square feet
Native, Bee Friendly, Attracts Butterflies, Attracts Hummingbirds, Deer Resistant, Low Maintenance, Naturalizes, Cut Flowers, Mass Plantings


This is the blue-flowered species in the famous wild lobelia family. This one is a grand 3 to 5' plant that quickly forms attractive colonies in light woodland or other shady spots. (Allow the flowers to drop their seeds in fall, and you'll have a big group of plants in no time.) Unlike its cousin, the more showy red Cardinal Flower, which holds its flower stalks above the leaves, Great Blue Lobelia opens sky blue midsummer flowers in the axils of each upper leaf, and then continues blooming for weeks and weeks. It also sends out side shoots, resulting in striking blue bloom on a candelabra-like plant.