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Lobelia siphilitica

Lobelia siphilitica

Cardinal Flower - Big Blue

Big Blue Lobelia has clear blue flower spikes appearing in August and September, attracting hummingbirds, bumblebees and long-tounged bees. Given enough moisture, Lobelia siphilitica does well in full sun, even more than L. cardinalis. Very wet site tolerant, and naturalizes well from seed.  Plants are indigenous to wet prairies, soggy meadows, edges of ponds, wet pastures.  

Height 36 Inches

Spread 18 Inches

Bloom Color Blue

USDA Hardiness Zone 4

Companion Plants to Lobelia siphilitica

Carex grayi
Gray's Sedge

Chelone glabra
Turtlehead

Carex muskingumensis
Palm Sedge

Similar Plants to Lobelia siphilitica

Vernonia lettermannii 'Iron Butterfly'
Narrowleaf Ironweed

Aconitum fischeri
Fischer's Monkshood

Scutellaria incana
Hoary Skullcap