Blue Cardinal Flower (Lobelia Siphilitica) - Growing Guide | Neighborbrite

Blue Cardinal Flower (Lobelia Siphilitica) - Perennials

Grow conditions

Sunlight

Full-sun; partial-shade

Hardiness zone

5-9

Min. Temperature

−20°F (−29°C)

Soil type

Loam, Moist, Well drained

Soil pH

Acidic, Neutral

Blue Cardinal Flower

Lobelia Siphilitica

Grow conditions

Sunlight: Full-sun; partial-shade
Hardiness zone: 5-9
Min. Temperature: −20°F (−29°C)
Soil type: Loam, Moist, Well drained
Soil pH: Acidic, Neutral

Plant traits

Mature height4 feet

Mature spread1-2 feet

Plant typePerennials

Bloom seasonSummer, Fall

Foliage typeDeciduous

Tolerance & safety

Drought tolerant❌No

Pet safe❌Toxic

Deer resistant✅Yes

Pollinator-friendly—Unknown

Blue Cardinal Flower (Lobelia Siphilitica) - Perennials

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Blue Cardinal Flower (Lobelia Siphilitica) - Perennials

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