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Lobelia siphilitica

Lobelia siphilitica

Lobelia - Big Blue

Big Blue Lobelia has clear blue flower spikes appearing in August and September, attracting hummingbirds, butterflies and insects. Does well in full sun, even more than L. cardinalis. Very wet site tolerant, and naturalizes well from seed.

Height 36 Inches

Spread 18 Inches

Bloom Color Blue

USDA Hardiness Zone 4

Companion Plants to Lobelia siphilitica

Chelone lyonii 'Hot Lips'
Turtlehead

Eupatorium maculatum 'Phantom'
Joe Pye Weed

Carex grayi
Gray's Sedge

Similar Plants to Lobelia siphilitica

Pycnanthemum muticum
Mountain Mint

Asclepias incarnata 'Cinderella'
Swamp Milkweed

Agastache rugosa 'Golden Jubilee'
Purple Giant Hyssop