Lobelia siphilitica

Blue Cardinal Flower

A bit more sun-tolerant than the Red Lobelia, the blue spikes of this native flower in August and September with the same upright growth habit and a bushier shape. Growing 3–4' tall. The blue Lobelia likes a moist to average growing situation.

Height: 3-4 ft
Spacing: 18 in
Hardiness Zone: 4 – 8

We can not ship to following states: AK, AZ, CA, CO, ID, MT, NV, OR, UT, WA and HI.
Plants will be in seasonal condition with appropriate foliage.

Size Price Each 2-12 12+ QTY
Trade Gallon $12.95 $11.95 $9.95 SOLD OUT
Characteristics & Attributes for Lobelia siphilitica


Soil Moisture

Attracts Wildlife

Foliage Color

Critter Resistance



Flower Color