Lobelia siphilitica

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Lobelia siphilitica | great blue lobelia

Great blue lobelia is a short-lived perennial that often persists in gardens by means of volunteer offspring. Naturally occurring in wet soils, this species prefers consistent moisture and tolerates partial shade. It is prized for its spikes of brilliant blue flowers that attract a diversity of pollinators and hummingbirds. The flower color can range from a rich lavender to a vibrant dark blue, but set amongst a landscape that is often laden with many yellow-flowered summer bloomers, great blue lobelia is always a welcome contrast.

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Lobelia siphilitica | great blue lobelia

Great blue lobelia is a short-lived perennial that often persists in gardens by means of volunteer offspring. Naturally occurring in wet soils, this species prefers consistent moisture and tolerates partial shade. It is prized for its spikes of brilliant blue flowers that attract a diversity of pollinators and hummingbirds. The flower color can range from a rich lavender to a vibrant dark blue, but set amongst a landscape that is often laden with many yellow-flowered summer bloomers, great blue lobelia is always a welcome contrast.

HABIT

Height: 2-3’

Bloom Time: mid-summer to early fall

SITE CONDITIONS

Light: full sun, part shade

Soil: wet, medium-wet, average

CULTIVATION TIPS

Establishment: will self seed on bare soil

Deer Resistance: low, but plants flower (shorter) following deer browse

INTERACTIONS

Pollinator Support: high, supports numerous at-risk pollinators

CONSERVATION

Native Range: local ecotype

Seed Propagated: Hudson Valley, NY