Photo Courtesy of North Creek Nurseries

Lobelia siphilitica (Blue Cardinal Flower)

This evergreen perennial features upright mounds of deep green leaves that bear tall spikes of densely packed bright blue flowers. Moderate growth rate.

Blooms mid-summer
2-3 ft tall x 1-2 ft spread
HARDY to -30°F (-34.4°C)
Attracts bees, butterflies, and hummingbirds
Deer and rabbit resistant


Zone Zone 4
Exposure Full Sun
Moisture Moderate to Consistent Moisture
Native to Native