Photo by Melody

PlantFiles: Hybrid Cardinal Flower, Hybrid Lobelia
Lobelia x speciosa 'Fan Scarlet'

Family: Campanulaceae (kam-pan-yew-LAY-see-ee) (Info)
Genus: Lobelia (low-BEE-lee-a) (Info)
Species: x speciosa (spee-see-OH-sa) (Info)
Cultivar: Fan Scarlet
Additional cultivar information: (Fan series)

3 members have or want this plant for trade.


18-24 in. (45-60 cm)

12-15 in. (30-38 cm)
15-18 in. (38-45 cm)

USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)

Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade

All parts of plant are poisonous if ingested

Bloom Color:
Scarlet (Dark Red)

Bloom Time:
Mid Summer
Late Summer/Early Fall
Mid Fall


Other details:
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
By dividing the rootball
From seed; sow indoors before last frost
From seed; direct sow after last frost

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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There are a total of 11 photos.
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2 positives
1 neutral
No negatives

Gardeners' Notes:

Positive Billie_Sue On Aug 8, 2013, Billie_Sue from Saint Louisville, OH wrote:

Well established plant bed, but did exceptionally well this year due to a very wet season.

Neutral Sandwichkatexan On Jul 15, 2012, Sandwichkatexan from Copperas Cove, TX wrote:

Not quite sure how to feel about this plant , Here in Central Texas it needs copious amounts of water . I purchased it to attract hummingbirds but they seem to like the salvias and cigar flowers better. The flowers are themselves quite beautiful but the plant itself looks like a weed and where I have it, it gets tons of water and spreads. As of yet mixed love hate with this plant I prefer the blue lobelia siphilicata it is prettier and less weedy looking. and here the hummingbirds seem to go to the blue before this one . Still on the fence about ripping it out and planting another type of salvia or leaving it and letting it spread .

Positive hanna1 On Sep 17, 2004, hanna1 from Castro Valley, CA (Zone 9a) wrote:

I love the way it blooms.Prefers consistent soil moisture. Grows well at water's edge or in bog gardens, I have mine in a pot in partial shade, I keep it pretty wet or it let's me know right away. Vibrant flowers, Compact, bronze foliage, vigorous base-branching habit. Vivid scarlet flowers on dense, strickly upright spikes.
Members of the Fan series have an earlier bloomtime than the species. Blooms mid-Summer/Fall. Humingbirds and Swallowtails love it.
it loves a damp location, near a pond, will adapt to wet feet or well drained soil. Deadhead blooms, will improve overall appearance. Cut back in Spring not Fall, foliage will help the root zone in Winter. Mulch in Winter.
look good planted with hostas, daylilies, spiderwort, astilbe and ferns. I didn't take a picture on time, maybe next season.


This plant has been said to grow in the following regions:

North Little Rock, Arkansas
Greenville, Indiana
Owosso, Michigan
Plainwell, Michigan
Little Falls, Minnesota
Santa Fe, New Mexico
Elizabeth City, North Carolina
Saint Louisville, Ohio
Salem, Oregon
Lebanon, Pennsylvania
Austin, Texas
Copperas Cove, Texas
East Port Orchard, Washington

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