Photo by Melody

PlantFiles: Lobelia
Lobelia 'Ruby Slippers'

Family: Campanulaceae (kam-pan-yew-LAY-see-ee) (Info)
Genus: Lobelia (low-BEE-lee-a) (Info)
Cultivar: Ruby Slippers

One vendor has this plant for sale.

6 members have or want this plant for trade.


24-36 in. (60-90 cm)

12-15 in. (30-38 cm)

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)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Sun to Partial Shade
Light Shade

All parts of plant are poisonous if ingested

Bloom Color:
Scarlet (Dark Red)

Bloom Time:
Late Summer/Early 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 herbaceous stem cuttings
From seed; direct sow outdoors in fall
Direct sow as soon as the ground can be worked
From seed; sow indoors before last frost

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

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By jody
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There are a total of 8 photos.
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3 positives
No neutrals
No negatives

Gardeners' Notes:

Positive Jay11 On Jun 11, 2014, Jay11 from Cambridge, MA wrote:

I have grown this plant for several years. I love the color and find it worth the trouble keep it going. Individual plants live only a few years so replacement or propagation is necessary. The plants do really need a lot of moisture so I now have them on the north east side of my house where it is fairly damp. Moisture is more important than sun in my experience. I suggest Conoclinium coelestinum Cori (blue mist plant) as a companion plant, beautiful.

Positive bottlegreen On Aug 11, 2011, bottlegreen from Saint Paul, MN wrote:

Only 6 of the 15 I ordered from Bluestone survived, but these 6 are sensational. A glorious color; I agree that it's hard to describe! The plants are fresh-looking when the rest of the garden is getting tired, but they begin to flower before the really late perennials ('Autumn Joy,' obedient plant, L. speciosum, etc.). A lot of sun is fine--even better--as long as the soil isn't too dry.

Positive ericabelle On Aug 14, 2009, ericabelle from West Plains, MO (Zone 6b) wrote:

This is my first year with this lobelia, and it is one of my new favorites! I wish I could describe the color - photos don't quite do it justice. It is a very dark fuschia-maroon color - very unusual! It is not, however, so "red" that it detracts from the other flowers in the bed - it compliments the other colors. AND the hummingbirds love it!


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

Cordele, Georgia
Ewing, Kentucky
Annapolis, Maryland
Cambridge, Massachusetts
Saint Paul, Minnesota
West Plains, Missouri
Oxford, New York
Murrysville, Pennsylvania
Wilkes Barre, Pennsylvania
Summerville, South Carolina
Lexington, Virginia
Mc Lean, Virginia
Winchester, Virginia
Pullman, Washington

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